Hook and Loop Backing: Self-abrasive sanding paper is strong and long lasting,, for easier and quicker sandpaper changes, saving your effort Widely applications: Sander pads is suitable for polishing, painting, putty, electronic products, metals, aluminium alloys, and so on : Pre-punched with 8 holes for efficient, avoid the trouble of manual punching, save for time and energy Size: approx 185x93mm / 7.28x3.66 inches Grit Type: 40 / 60 / 80 / 100 / 120 / 180 / 240, you can choose or more according to your needs Aluminum Oxide Sandpaper: Sanding pad features good abrasion resistance, anti-static and anti-clogging, Manufacturer: CRFFZ