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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Description

⚡ Grind faster, last longer, finish sharper — own the edge!

BUILT TO OUTLAST - Premium abrasive cloth ensures up to 15X longer life than traditional fiber resin discs—work smarter, not harder.
COMPACT POWERHOUSE - 4-1/2 inch diameter fits most angle grinders, including DEWALT DCG416B, for versatile, on-the-go grinding.
SPEED MEETS PRECISION - Zirconia grit delivers 3X faster material removal to power through projects with ease.
LIGHTWEIGHT EFFICIENCY - At just 1.6 ounces, this disc offers effortless handling without sacrificing durability or performance.
PERFECT ANGLE EVERY TIME - Type 29 fiberglass backing maintains an optimal 10-25° grinding angle for flawless finishes without marring.

The DEWALT DW8309 4-1/2" x 7/8" 80 grit Zirconia flap disc combines advanced 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 ensures an optimal grinding angle of 10-25°, delivering precise, clean finishes without damaging your workpiece. Lightweight and compatible with popular angle grinders like the DEWALT DCG416B, this disc is engineered for professional-grade efficiency and durability.

Specifications

Grit Material	Zirconia
Product Dimensions	4.5"L x 4.5"W
Brand	DEWALT
Compatible Devices	Angle Grinder
Grit Type	Medium
Item Thickness	4.5 Inches
Grit Number	80
Construction Type	Grinding
Compatible Disc Grinder Tool Models	DEWALT DCG416B
Global Trade Identification Number	00028877310459
UPC	028877310459
Manufacturer	DeWalt
Part Number	DW8309
Item Weight	1.6 ounces
Item model number	DW8309
Is Discontinued By Manufacturer	No
Size	1 Count (Pack of 1)
Color	Multi
Style	80G 7/8-Inch Hub
Finish	Brushed
Material	Blend
Pattern	Solid
Shape	Rectangular
Power Source	Hand Powered
Item Package Quantity	1
Cutting Diameter	4.5 Inches
Measurement System	Metric
Included Components	4-1/2" x 7/8" 80 Grit Zirconia Flap Disc
Batteries Included?	No
Batteries Required?	No
Assembled Diameter	4.5 Inches

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