Product Review

Package contains:
10 x 240 grit sanding discs
10 x 320 grit sanding discs
10 x 400 grit sanding discs
10 x 600 grit sanding discs
10 x 800 grit sanding discs
10 x 1000 grit sanding discs
The higher the number, the finer the grit. And vice verse.

Specifications:
Size: The discs are 5 inch in diameter. The holes are 3/8 inch in diameter. From one hole to the next around the circle is 1.0 inch. From one hole directly across the disc to another is 2+9/16 inch.
Number of holes：8 holes
Material: aluminum oxide abrasive
Color: reddish brown

Features:
Proper sanding creates the best finishes, whether you're working with metal, wood or drywall.
The specific grit numbers you need vary by project and the material you're sanding, so follow the abrasive product manufacturer's recommendations.
Hook and loop sandpaper backing makes grit changes quick and easy, and lengthens the life of the abrasive.