Specifications: <br> Size: 5 inch diameter <br> Color:Red<br> Specifications Tolerance: +/- 1 mm <br> Abrasive: Aluminum Oxide <br> Back technique: napping <br> Number of holes: 8 Holes <br> Fits for 5-inch Random Orbit Sander <br><br> 20PCS 60 grit sanding discs<br> 20PCS 80 grit sanding discs<br> 20PCS 100 grit sanding discs<br> 20PCS 120 grit sanding discs<br> 15PCS 150 grit sanding discs<br> 15PCS 180 grit sanding discs<br> 10PCS 240 grit sanding discs<br> 10PCS 320 grit sanding discs<br> 10PCS 400 grit sanding discs<br> 10PCS 600 grit sanding discs<br> 10 different grades, 150pcs in total.<br> The higher the number, the finer the grit. And vice verse.<br>