Practical design: mouse sanding sheets with 2 extra tips for replacement, suitable for Black and Decker 140mm detail palm sander and other 140mm detail sanders Abrasive material : aluminum oxide, durable and anti-static, good choice for sanding and polishing Backing: hook and loop, easy and quick to stick, sturdy and durable; pre-punched with 4 holes for dust extraction Wide application: 5 grits of assorted sandpaper from rough to fine to satisfy almost all your general polishing requirements Package includes: 50pcs mouse sanding sheets, 10x 40/60/80/120 /240 grit Due to factors such as manual measurement and display differences, there may be slight differences between individual products and images, please forgive me.