It is one kind of abrasives which is for the surface dealing of metal and non-metal materials.
Name: Anti-Clogging Velcro-Type Sanding Disc
Size: 6" with 6 holes or without holes
Grit: #40 -- #1500
Material: D-Grade Paper, and Brwon Fused Alumina, and Flannel Cloth on the back of disc
Application: mainly used for polishing auto surface, wood, stone material,metal etc.
Shapes: The disc can be punched into circular, triangle or other special shapes.