<b>Package contains:</b><br> 10 x 240 grit sanding discs<br> 10 x 320 grit sanding discs<br> 10 x 400 grit sanding discs<br> 10 x 600 grit sanding discs<br> 10 x 800 grit sanding discs<br> 10 x 1000 grit sanding discs<br> The higher the number, the finer the grit. And vice verse.<br> <br> <b>Specifications:</b><br> 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.<br> Number of holes：8 holes<br> Material: aluminum oxide abrasive<br> Color: reddish brown<br> <br> <b>Features:</b><br> Proper sanding creates the best finishes, whether you're working with metal, wood or drywall.<br> The specific grit numbers you need vary by project and the material you're sanding, so follow the abrasive product manufacturer's recommendations.<br> Hook and loop sandpaper backing makes grit changes quick and easy, and lengthens the life of the abrasive.<br>