Features:* Product Material: These mouse pads are made of abrasive alumina, durable and anti-static, perfect for general grinding, polishing and sanding. The gravel is larger, the polishing effect is finer.* Velcro fastener design: each of them with velcro and velcro fastener is easy to assemble and disassemble, durable and practical, can anti-static and anti-clogging.* Wide application: come from coarse, medium, fine grades, widely used in metal and non-metal, wood, rubber, leather, plastic, stone, glass and other grinding materials, polishing.* Suitable for Delta 93mm grinder and other abrasive tools. Specifications: Made of alumina. 6 holes for dust collection. Size: 93mm. Grit 60/80/120/180/240 (options)Package Includes: 25pcsPackage Included:25pcs Sandpaper