1. It is based on high-strength fiberglass and coated with alumina abrasive by gravity sand planting or electrostatic sand planting. Therefore, it is durable and does not drop sand, and has a sharp grinding efficiency and a long service life. 2. It has chip removal capability to prevent sandpaper from clogging and reduce dust pollution. The mesh cloth has good toughness, is not easy to deform and break, and has impact resistance. 3. 30pcs 125mm (5 Inch) and loop Mesh Sanding Disc 4. Specially used for sanding treatment of dry board walls before , as as derusting, grinding and polishing treatment of various metal surfaces, and can also be used for the polishing of wood, marble and various mechanical equipment Specifications: 80 100 120 150 320 600 Grit colour: brown Material: fiberglass Package Contents: 30 x Mesh Sanding Discs(80 100 120 150 320 600 Grit) Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.