is it 4-1/2 x 1/4 x 7/8? I notice it is only described as 4-1/2 x 7/8. Pls help. Tks

Yes. 41/2 diameter x 1/4" thick with a 7/8" hole ( bore)

Is there an adapter to use on a 5/8 inch grinder

should use same arbor back flange and securing nut as an ordinary grinding wheel without threaded arbor, usually comes with grinder

I want to shave a door down about 3/8 inch. Would this work for the job?

mostly, this is used for grinding metals. To cut 3/8" wood, you need a saw not a grinder. Thanks

I think it you used it with a variable speed grinder at the slowest speed it would work for cleaning up the edges. For glass I just use a random orbital electric sander with 100 grit, since glaze is essentially glass, I would use caution on a rough grit.

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DEWALT DW8309 4-1/2" x 7/8" 80 Grit Zirconia Angle Grinder Flap Disc

DEWALT DW8309 4-1/2" x 7/8" 80 Grit Zirconia Angle Grinder Flap Disc

Product ID: 708252852

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Details

Grit Material
Zirconia
Product Dimensions
11.4L x 11.4W
Brand
DEWALT
Compatible Devices
Angle Grinder
Item Thickness
0.88 Inches

⏳15X longer abrasive life

⚡3X faster material removal

🔧Optimal 10-25° grinding angle

Description

⚡ Grind smarter, not harder — unleash pro-level speed and durability!

COMPACT POWERHOUSE - Lightweight 45.4g design fits perfectly on your 4-1/2" angle grinder for agile handling and maximum control.
ENDURANCE CHAMPION - Premium abrasive cloth lasts up to 15X longer, meaning fewer disc changes and more uninterrupted workflow.
PRECISION GRINDING - Type 29 fiberglass backing ensures a perfect 10-25° angle for smooth, controlled grinding without damaging your workpiece.
TURBOCHARGED EFFICIENCY - Zirconia grit delivers 3X faster material removal than standard discs, saving you precious project time.
TRUSTED DEWALT DURABILITY - Engineered by DEWALT, a brand synonymous with professional-grade tools, ensuring reliability on every job.

The DEWALT DW8309 4-1/2" x 7/8" 80 Grit Zirconia Angle Grinder Flap Disc combines zirconia grit for 3X faster material removal with a premium abrasive cloth that lasts 15X longer than fiber resin discs. Its Type 29 fiberglass backing provides an optimal 10-25° grinding angle, ensuring efficient, precise grinding without marring surfaces. Lightweight and engineered by DEWALT, this flap disc is designed for professional-grade performance and durability.

Specifications

Grit Material	Zirconia
Product Dimensions	11.4L x 11.4W Centimeters
Brand	DEWALT
Compatible Devices	Angle Grinder
Item Thickness	0.88 Inches
Grit Number	80
Construction Type	Grinding
Global Trade Identification Number	00028877310459
UPC	028877310459
Manufacturer	DeWalt
Model number	DW8309
Colour	Multi
Number of Memory Sticks	1
Item Weight	45.4 g
Item model number	DW8309
Power Source	Hand Powered
Included Components	4-1/2" x 7/8" 80 Grit Zirconia Flap Disc
Are batteries included?	No

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