🌟5%OFF For New Customers-Code: NEW5%
🌟Free Shipping For Payments Over $200
🌟6%OFF Order Over $500
🌟10% OFF Order Over $1200
🌟5%OFF For New Customers-Code: NEW5%
🌟Free Shipping For Payments Over $200
🌟6%OFF Order Over $500
🌟10% OFF Order Over $1200
🌟5%OFF For New Customers-Code: NEW5%
🌟Free Shipping For Payments Over $200
🌟6%OFF Order Over $500
🌟10% OFF Order Over $1200
🌟5%OFF For New Customers-Code: NEW5%
🌟Free Shipping For Payments Over $200
🌟6%OFF Order Over $500
🌟10% OFF Order Over $1200
🌟5%OFF For New Customers-Code: NEW5%
🌟Free Shipping For Payments Over $200
🌟6%OFF Order Over $500
🌟10% OFF Order Over $1200
🌟5%OFF For New Customers-Code: NEW5%
🌟Free Shipping For Payments Over $200
🌟6%OFF Order Over $500
🌟10% OFF Order Over $1200
🌟5%OFF For New Customers-Code: NEW5%
🌟Free Shipping For Payments Over $200
🌟6%OFF Order Over $500
🌟10% OFF Order Over $1200
🌟5%OFF For New Customers-Code: NEW5%
🌟Free Shipping For Payments Over $200
🌟6%OFF Order Over $500
🌟10% OFF Order Over $1200
Main menu
-
Catalog
- Catalog
-
Anesthetics
-
Articulating
-
Burs
-
Bonding
-
CAD/CAM Products
-
Crowns
-
Cements & Liners
-
Cosmetic Restoratives
-
Disposables
-
Endodontics
- Endodontics
- Apex Locators
- Absorbent Points
- Endodontic Handpieces
- Endodontic Instruments
- Endodontic Accessories
- Endo Files
- Endodontic Access Burs
- Gutta Percha Cutting Devices
- Gutta Percha Points
- Irrigation Units
- Irrigation Solution Endo
- Irrigation-evacuation system
- Obturation System & Devices
- Pulp Vitality Tester
- Root Canal Sealers
-
Equipment (Small)
- Equipment (Small)
- Air Polishers
- Air Abrasion Systems & Accessories
- Curing Lights & Accessories
- Dental Loupes
- Dental Photography Equipment
- Digital Radiography Equipment
- Dust Collectors & Filters
- Electrosurgery Unit & Tips
- Intraoral Scanners
- Intraoral Cameras
- Implant Stability Measurement
- PSP Scanner
- Piezosurgery
- Resin Heater
- Scalers & Accessories
- Soft Tissue Laser
- Ultrasonic Cleaners
-
Equipment (Large)
-
Evacuation
-
Files
-
Finishing & Polishing
- Finishing & Polishing
- Finishing & Polishing Kits
- Finishing & Polishing Discs
- Finishing & Polishing Brush Wheel
- Finishing & Polishing Wheels
- Finishing & Polishing Points
- Finishing & Polishing Stones
- Finishing & Polishing Strips
- Finishing & Polishing Miscellaneous Products
-
Handpieces
-
Implant
-
Impression Material
-
Instruments
-
Infection Control
-
Laboratory
-
Matrix
-
Orthodontics
-
Prophy Products
-
Preventive Products
-
Patient Giveaways
-
Pins & Posts
-
Retraction
-
Rubber Dams
-
Surgical
-
Tooth Whitening
-
X-Ray
-
Orthodontic Supplies
-
Handpieces
-
Small Equipment
-
Large Equipment
-
Deal & Promotions
Your cart
Get 5% OFF For First Order🔥
Sign up and unlock your instant discount.
You are signing up to receive communication via email and can unsubscribe at any time.
Bur & Polishing
164 products
164 products
Sort by:
- Featured
- Most relevant
- Best selling
- Alphabetically, A-Z
- Alphabetically, Z-A
- Price, low to high
- Price, high to low
- Date, old to new
- Date, new to old
Dental Diamond Bur TR Series Full Size Round End Cone 5pcs/Pack. Easy to use, conveniently, and hygiene. Rigidity, sharpness and wear. The head of Diamond Burs contain a large of sand, and coverage widely.
If you want Assorted Models, please leave us message directly.
| Overview |
|
Dental Diamond Bur TF Series, 20 Models, Flat Cone, 5pcs/Pack. Easy to use, conveniently, and hygiene. Rigidity, sharpness and wear. The head of Diamond Burs contain a large of sand, and coverage widely.
If you want Assorted Models, please leave us message directly.
| Overview |
|
Dental Diamond Bur FG BR Series Full Size Round 5pcs/Pack.The head of Diamond Burs contain a large of sand, and coverage widely. Rigidity, sharpness and wear. Easy to use, conveniently, and hygiene.
If you want Assorted Models, please leave us message directly.
| Overview |
|
Dental Carbide Bur FG #330 Pear Shaped 10pcs/Box. For high speed dental handpiece. Sharp cutting edge, high concentricity, stable and durable.
| Overview |
|
| Specifications |
| Material: | Tungsten steel |
| Size: | Φ0.8mm*1.9mm |
| Shank Diameter: | 1.6mm |
| Length: | 19mm |
| Package: | 10Pcs/Box |
Dental Carbide Bur FG #557 Straight Fissure Crosscut 10/Box. For high speed dental handpiece. Sharp cutting edge, high concentricity, stable and durable.
| Overview |
|
| Specifications |
| Model: | FG557 |
| Material: | Tungsten Steel |
| Size: | Φ1.0mm*4.2mm |
| Shank Diameter: | 1.6mm |
| Length: | 19mm |
| Package: | 10Pcs/Box |
Dental Tungsten Carbide Burs FG 7901 Trimming & Finishing 10pcs/Box. 12 Fluted. Made of tungsten carbide, durable. Titanium coated. Exceptional cutting performance.
| Overview |
|
| Specifications |
| Type: | FG 7901 |
| Size: | Φ0.8mm*4.0mm |
| Shank Diameter: | 1.6mm |
| Package: | 10Pcs/Box |
Dental Rubber Polishing Polisher Kit Composite Ceramic Zircon Wheel For High Brightness Polishing 6pcs/Box. Applicable on composite,ceramic and Zircon. Made of high quality resin. Great results, high efficiency.
| Overview |
|
| Feature |
| Model: | RA disc 14mm |
|
Fineness: |
Coarse/Medium/Fine |
|
Recommend speed: |
7,000-12,000 rpm/min |
| Package: | 6pcs/Box |
Dental Composite Polishing Kit 12pcs/Box. Including 6pcs polishing brushes and 6pcs silicone polishers. For Composite Finishing and Polishing. Shank diameter RA 2.35MM. Recommended speed 15,000rpm/min.
| Overview |
|
| Packing List |
| Polishing brushes: | 6 Pcs |
| Silicone polishers: | 6 Pcs |
|
Total: |
12Pcs/Box |
Dental Lab Polishing Kit for Ceramics Porcelain HP Shank 35pcs/Box. Shank diameter 2.35mm. Recommended speed 15,000-20,000rpm/min.
| Overview |
|
| Packing List |
| Diamond burs: | 10 Pcs |
| Diamond Discs: | 4 Pcs |
|
HP Green Stones: |
6 Pcs |
|
Silicone wheel: |
3 Pcs |
|
Silicone Polishers: |
8 Pcs |
|
Polishing brushes: |
4 Pcs |
|
Total: |
35Pcs/Box |
Dental Polishing FG Burs Flame Shape White Stone 12pcs/Box.
- High quality aluminum oxide material.
- Special for dental clinic metal,resin and porcelain.
- Recommended R.P.M is 7,000-10,000/min.
Dental Diamond Bur SF Series Full Size Flat End Cylinder 5pcs/Pack. The head of Diamond Burs contain a large of sand, and coverage widely. Easy to use, conveniently, and hygiene. Rigidity, sharpness and wear.
If you want Assorted Models, please leave us message directly.
| Overview |
|
Dental FG Diamond Burs for High Speed Handpiece 1.6MM Medium 20 Boxes/Kit, total 100pcs.
| Product Details |
| Package: | 20boxes/Kit (100pcs) |
| Brand: | AZDENT |
| Contains model: | BR-31,BR-41,BR-45,BR-46,TR-12,TR-13,TR-14,TR-15,TR-19,TR-13C ,TR-13F,TR-62C,SF-41,FO-11,FO-25,FO-32,FO-30F,TC-11,TF-11,TF-13C |
| Little Tips : | TF/Taper Flat End,TR /Taper Round End, TC/ Taper Conical End,FO/Flame Ogival End, SF /Straight Flat End,BR/ball Round |
$11.69
Dental Diamond Burs for High Speed Handpiece Medium FG 1.6MM 100pcs/Kit. 20 Assorted Types: BR-30, TF-11, BR-31, TF-13C, BR-41, CR-22F, BR-31C, FO-32, BR-30C, FO-32C, TR-11, SF-12C, TR-15, TC-11F, TR13C, TC-11C, TF-21EF, DI-SS41, EX-26, FO-25.
| Product Details |
| Package: | 20boxes(100pcs) |
| Model: | BR-30,TF-11,BR-31,TF-13C,BR-41,CR-22F,BR-31C,FO-32,BR-30C,FO-32C,TR-11,SF-12C,TR-15,TC-11F,TR13C,TC-11C,TF-21EF,DI-SS41,EX-26,FO-25 |
$11.51
Dental Diamond Bur FG EX Series Full Size Barrel 5pcs/Pack. Rigidity, sharpness and wear. The head of Diamond Burs contain a large of sand, and coverage widely. It is very easy to use, conveniently, and hygiene.
If you want Assorted Models, please leave us message directly.
| Overview |
|
Dental Diamond Bur FG FO Series Full Size Flame 5pcs/Pack. Easy to use, conveniently, and hygiene. The head of Diamond Burs contain a large of sand, and coverage widely. Rigidity, sharpness and wear.
If you want Assorted Models, please leave us message directly.
| Overview |
|
Dental Diamond Burs Two Layers 5pcs/Box. BR-31/SF-41/BR-40/FO-32 that you can choose. The color ring on the instrument shank and the color of the packaging correspond to the ISO code. Color coded for optimal efficiency. The two-layer diamond coated burs last about 70% longer than common one layer diamond burs.
If you want Assorted Models, please leave us message directly.
| Product Details |
| Package: | 5 pieces per box |
|
Work length: |
1.8 mm/0.07 inch |
| Model: | BR-31,SF-41,BR-40, FO-32 |
| The Max Speed: | 450,000 RPM |
| Full length: | 19 mm/0.748 inch |
Dental Diamond Bur FG-112 Crown Preparation Anterior Teeth Kit 10pcs/Kit
| Product Details |
| Package: |
10pcs/kit SR-12,SR-12,SF-41,SO-20,SR-11,FO-25,EX-18F,TR-13F, CE-15F,TC-11EF |
|
Head Material: |
Diamond Grit |
| Model: | FG-112 |
| Shank Type: | FG (Friction Grip) |
| Type: | Trimming/Finishing Bur |
Dental Diamond Bur FG 113 Crown Preparation Molar Teeth Kit 8pcs/Kit. The kit contains: SF-31,TF-22,TR-13,TR-11,TR-12,EX-19F,TR-13F,TC-11EF.
| Specifications |
| Package: |
8pcs/kit SF-31,TF-22,TR-13,TR-11,TR-12,EX-19F,TR-13F,TC-11EF |
|
Head Material: |
Diamond Grit |
| Model: | FG-113 |
| Shank Type: | FG (Friction Grip) |
| Type: | Trimming/Finishing Bur |
Dental Diamond Bur FG 109 Porcelain Preparation Repair Kit 10pcs/Kit. The 10 pieces package includes: TF-11S,TF-12S,TF-13S,SF-11S,WR-13S,TR-11S,TR-12S,TR-13S,TR-62S,FO-25S.
| Specifications |
| Package: | 10 pieces per kit |
| The 10-piece Package: | TF-11S,TF-12S,TF-13S,SF-11S,WR-13S,TR-11S,TR-12S,TR-13S,TR-62S,FO-25S. |
|
Head Material: |
Diamond Grit |
| Model: | FG-109 |
| Shank Type: | FG (Friction Grip) |
| Featured Refinements: | Diamond Dental Burs |
Dental Diamond Burs FG TF-13S Flat Cone 10pcs/Box, Suitable for high-speed Handpieces. Used for lingual fossa polishing molars meiso-occlusal.
| Product Details |
| Package: | 10 pieces per box |
|
Work length: |
2.0mm |
| Model: | TF-13S |
| The Max Speed: | 160,000RPM |
| The max diameter: | 4.4mm |
| Full length: | 19.2mm |
Dental Diamond Burs FG TF-21S Flat Cone 10pcs/Box, Suitable for high-speed Handpieces. Used for lingual fossa polishing molars meiso-occlusal.
| Product Details |
| Package: | 10 pieces per box |
|
Work length: |
2.0mm |
| Model: | TR-22S |
| The Max Speed: | 160,000RPM |
| The max diameter: | 4.4mm |
| Full length: | 19.2mm |
Dental Diamond Burs FG SI-48S Inverted Cone 10pcs/Box, Suitable for high-speed Handpieces. Used for lingual fossa polishing molars meiso-occlusal.
| Product Details |
| Package: | 10 pieces per box |
|
Work length: |
2.0mm |
| Model: | SO-21S |
| The Max Speed: | 160,000RPM |
| The max diameter: | 4.4mm |
| Full length: | 19.2mm |
Dental Diamond Burs FG SR-12S Round End Cylinder 10pcs/Box, Suitable for high-speed Handpieces. Used for lingual fossa polishing molars meiso-occlusal.
| Product Details |
| Package: | 10 pieces per box |
|
Work length: |
2.0mm |
| Model: | SR-12S |
| The Max Speed: | 160,000RPM |
| The max diameter: | 4.4mm |
| Full length: | 19.2mm |
Dental Diamond Burs FG TF-21S Flat Cone 10pcs/Box,Suitable for high-speed Handpieces. Used for lingual fossa polishing molars meiso-occlusal.
| Product Details |
| Package: | 10 pieces per box |
|
Work length: |
2.0mm |
| Model: | TR-13S |
| The Max Speed: | 160,000RPM |
| The max diameter: | 4.4mm |
| Full length: | 19.2mm |
Dental Diamond Bur FG 379-023F Football Red 10pcs/Kit. Maximum precision and minimum vibration. Superior cutting efficiency and long instrument life. Rapid, smooth and comfortable cutting. Concentric, balanced bur with long lasting cutting ability.
| Overview |
|
Dental Diamond Bur FG 106 Kiddies Kit 10pcs/Kit. Kiddies are specially designed for prepartion in childa mouth and for difficult to reavh areas special micro sied heads for minimal invasive restorative dentistry and childrens dentistry paedodontology
| Specifications |
|
Head Material: |
Diamond Grit |
| Model: | FG-106 |
| Shank Type: | FG (Friction Grip) |
| Package: |
10 pieces per kit 001-006SF CD-50F |
Dental Diamond Bur Orthodontic Interproximal Enamel Set 5pcs/Kit. Great for cutting, grinding, polishing.
| Overview |
|
| Specifications |
| Package: | 5 pieces per box |
| Model: | Orthodontic Interproximal enamel |
| Head Material: | Diamond Grit |
Dental Diamond Bur FG-115 Minimally Invasive Cavity Preparation Coarse Kit 8pcs/Kit
| Product Details |
| Package: | 8pcs/kit |
|
Head Material: |
Diamond Grit |
| Model: | FG-115 |
| Shank Type: | FG (Friction Grip) |
| Type: | Trimming/Finishing Bur |
Dental Silicone Polishing Kits Assorted Models For Composite /Natural Teeth/ Porcelain finishing and polishing 12Pcs/pack. 2.35MM Shank diameter, for contra angle handpiece. Pink (Mid-coarse), Gray (coarse), Blue (fine). 135℃ autoclavable.
| Overview |
|
Dental Polishing Kit for Low Speed Contra Angle 3 Models 12pcs/Box. Soft silicone polishers and diamond polishers for composite materials, preparation and high gloss polishing.
| Usage |
|
| Instructions |
|
| RA 1112 Steps |
|
| RA 2112 Steps |
|
| RA 3112 Steps |
|
| Product Details |
| Packing List: | 12pcs/Kit |
Dental Lab Ceramic Diamond Grinder Polisher For Zirconia & Porcelain Polishing. Used for zirconia inner crown, porcelain tooth surface and crown. Ceramic bonded grinder with diamond. Efficiently grinding,polishing and precisely finishing.
| Overview |
|
| Size |
| CD2123 | Size: 4x10.5mm Recommended speed:20,000-35,000r/min |
| CD2023 | Size: 5x12mm Recommended speed:20,000-30,000r/min |
| CD0123 | Size: 22x2mm Recommended speed:15,000-30,000r/min |
| CD0093 | Size: 22x4.5mm Recommended speed:15,000-30,000r/min |
Dental Dental Composite Finishing and Polishing Kit with Mandrel 20Pcs/Box. Three Different Shapes: Cup*5pcs, Inverted cone*5pcs, Point*10pcs, Mandrel*1pc. 134°C Autoclavable. Made of Silicone with Aluminium Oxide. Finish for All Types of Composite Restorations, Without Damaging the Tooth Enamel.
| Overview |
|
| Technical |
| Material: | Silicone with Aluminium oxide |
| Recommended speed: | 7,000-10,000 rpm/min |
| Shapes: | Available in three different shapes |
| Size: | 6*11mm、6*10mm、10*7mm |
| Mandrel diameter: | CA 2.35MM |
| Autoclavable: | 134°C Autoclavable |
| Package |
|
Dental Lab Polishing Kit HP Shank for Composite Ceramic 51pcs/Box. Shank diameter 2.35mm. Recommended speed 15,000-20,000rpm/min.
| Overview |
|
Dental Polishing FG Burs Cone Shape White Stone 12pcs/Box.
- High quality aluminum oxide material.
- Special for dental clinic metal,resin and porcelain.
- Recommended R.P.M is 7,000-10,000/min.
Dental Polishing Burs White Stone Round Shape 12pcs/Box.
- Reliable quality aluminum oxide material.
- Recommended R.P.M is 7,000-10,000/min.
Dental Silicone Polisher Abrasive FG 12pcs/box. For pre-polishing. Silicone polisher impregnated with high quality abrasives. For amalgams, precious alloys and non-precious alloys.
| Overview |
|
| Specifications |
| Recommended Speed: | 7,000-30,000rpm/min |
| Head Size: | 3*7mm |
| Total Length: | 23mm |
| Shank Diameter: | 1.6mm |
Dental Diamond Burs Hidden Resin Base Polishing Kit for Low Speed HP 0412. 12 Silicone Polishers.
| Kit Profile(12 Silicone Polishers ) |
|
| Specific Steps |
|
Followed is the specific steps. (Note: Each step should be used at the recommended speed.)
|
| Product Details |
| Packing List: | 12pcs/Box |
Dental Diamond Burs Polishing Kits SG1201(RA 0109) for Low Speed Handpiece 9pcs/Box. 9 Polishing Sizes.
| Kit Profile (9 rubber polishers ) |
|
| Specific Steps |
|
Followed is the specific steps. (Note: Each step should be used at the recommended speed.)
|
| Product Details |
| Packing List: | 9pcs/Box |
Dental Composite Polishing Kit RA 0309 for Low Speed Handpiece Contra Angle 9pcs/Box. 3 ceramic polishers and 6 silicone rubber polishers.
| Follow The Specific Steps |
|
| Kit Profile: |
| CW 3064 | White pointed polisher |
| CW 3114 | White cone polisher |
| CW 3514 | White ball polisher |
| SH 3203 | Pink cup-shaped polisher |
| SH 3413 | Pink knife wheel polisher |
| SH 3133 | Pink pointed polisher |
| SH 3204 | Light blue cup-shaped polisher |
| SH 3414 | Light blue knife wheel polisher |
| SH 3134 | Light blue pointed polisher |
Dental Polishing Simple Kit RA 0304 for Composite Resin 4pcs/Box. 2pcs white silicone polishers: SH3132, SH3202. 2pcs blue silicone polishers: SH3134, SH3204. Soft silicone polishers for porcelain.
| Overview |
|
| Followed The Specific Steps |
|
Note: Each step should be used at the recommended speed. First, adjust the nose to recommended speed, the polishers should be in the good condition and can achieve the great polishing effect.
|
| Feature |
| Model: | RA 0304 |
| Package: | 4pcs/Box |
|
Net weight: |
19.2g |
| Size: | 7.5*5cm |
| Material: | Silicone polishers |
| Used for Handpiece type: | Low-speed contra handpiece |
| Condition: | Disinfection of high temperature at 135 ℃ without package box |
Dental Burs Drill Disinfection Block High Speed Handpiece Holder Blue 30 Holes. Made of high quality Aluminium, autoclavable. Covers 30 holes for FG burs, point for high speed. Used for burs sterilization, can sterilize 30 burs each time.
| Overview |
|
| Product Details |
| Color: | Blue |
| Holes: | 30 Holes |
| Hole Diameter: | Approx. 2 mm |
| Burs Diameter: | Approx. 1.6mm |
| Box Size: | Approx. 7.5 x 2.5 x 3cm(L x W x H) |
Dental FG Carbide Finishing Burs 28mm Gold 6pcs/Box. Sectioning an impacted wisdom tooth prior to its extraction. Preparing a shoulder on the vestibular side of the tooth.
| Overview |
|
| Specifications |
| Total Length: | 28mm |
| Shank Diameter: | 1.6mm |
| Head diameter: | 1.6mm |
| Head working length: | 11mm |
| Color: | Gold |
| Package: | 6Pcs/Box |
Dental Carbide Burs High Speed Bone Cutters Finishing FG 28mm 6pcs/Box. Removing a broken root stump. Cutting a tooth horizontally at neck level. Sectioning an impacted wisdom tooth prior to its extraction.
| Overview |
|
| Specifications |
| Material: | Tungsten carbide |
| Shank diameter: | 1.6mm |
| Length: | 28mm |
| Package: | 6pcs/pack |
Dental Carbide Bur FG #557 Surgical Length Straight Fissure Crosscut 25mm 6pcs/Box. Powerful performance. Quality Guaranteed.
| Overview |
|
| Specifications |
| Length: | 25mm |
| Model: | FGXL 557 |
| Shank Diameter: | 1.6mm |
| Package: | 6pcs/Box |
Dental Tungsten Carbide Burs FG Long Tapered 25mm 6pcs/Box. Long, tapered bur creates a funnel shape for easier access in the pulp chamber. Safe-ended, non-cutting tip prevents penetration of the pulp chamber floor or the root canal walls.
| Overview |
|
Dental Carbide Burs FG 7406 Egg Shaped Trimming & Finishing 10pcs/Box. 12 Fluted. Made of tungsten carbide, durable. Titanium coated. Exceptional cutting performance.
| Overview |
|
| Specifications |
| Type: | FG 7406 |
| Head Diameter: | 1.8mm |
| Head Length: | 3.5mm |
| Shank Diameter: | 1.6mm |
| Total Length: | 19mm |
| Package: | 10Pcs/Box |
Dental Tungsten Carbide Burs FG 7902 Trimming & Finishing 10pcs/Box. 12 Fluted. Made of tungsten carbide, durable. Titanium coated. Exceptional cutting performance.
| Overview |
|
| Specifications |
| Type: | FG 7902 |
| Head Diameter: | 1.0mm |
| Head Length: | 4.0mm |
| Shank Diameter: | 1.6mm |
| Total Length: | 19mm |
| Package: | 10Pcs/Box |
Dental Carbide Burs FG 7408 Egg Shaped Trimming & Finishing 10pcs/Box. 12 Fluted. Made of tungsten carbide, durable. Titanium coated. Exceptional cutting performance.
| Overview |
|
| Specifications |
| Type: | FG 7408 |
| Head Diameter: | 2.3mm |
| Head Length: | 3.9mm |
| Shank Diameter: | 1.6mm |
| Total Length: | 19mm |
| Package: | 10Pcs/Box |
Dental Carbide Bur Metal Cutter FG #1958 10pcs/Box. Made of tungsten carbide, durable.19mm Length. For high speed dental handpiece.
| Overview |
|
| Specifications |
| Type: | FG 1958 |
| Head Diameter: | 1.2mm |
| Shank Diameter: | 1.6mm |
| Total Length: | 19mm |
| Package: | 10Pcs/Box |
Dental Carbide Bur FG #558 Straight Fissure Crosscut 10pcs/Box. For high speed dental handpiece. Made of tungsten carbide, durable. Powerful cutting performance.
| Overview |
|
| Specifications |
| Material: | Tungsten Carbide |
| Model: | FG558 |
| Bur Diameter: | 1.60mm |
| Length of Bur: | 19.0mm |
| Package: | 10Pcs/Box |
- Choosing a selection results in a full page refresh.
- Opens in a new window.