1. widely used in metal and non-metal, wood, rubber, leather, plastic, stone, glass and other materials grinding, polishing, etc.
2. NO-Hole configuration?5" diameter ?Hook and Loop Velcro backing: strong and long lasting, easy to install and remove.
3. Premium aluminum-oxide grain for optimal sanding capacity,Durable practical, anti-static ,Resin on resin bond for heat resistance.
4. Compatible with almost 5" Random Orbital Sanders with hook & Loop backing.
5. Package contains: 20 x 40 grit sanding discs, 20 x 60 grit sanding discs, 20 x 120 grit sanding discs.