Material abrasive: aluminium oxide, and anti-static, good choice for sanding and polishing Size: 140 * 90mm, pre-punched with 5 holes for dust extraction, suitable for 140mm detail Backing: hook and loop Nylon Buckle, easy and quick to stick, sturdy, and practical Wide application: 10 grits sandpaper assortment from rough to fine to satisfy almost all your general polishing requirements Mouse sandpapers are made from aluminium oxide abrasive, and anti-static. The grit is larger, the polish effect is finer. Suitable for using with 140mm detail . Hook and loop backed, and pre-punched with 5 holes for dust extraction, easy to use. Wide application. Apply to metal and non-metal, wood, rubber, leather, plastic, stone, glass and other materials grinding, polishing and so on. Note: These sandpapers are suitable for matched 5 holes hook side of Nylon Buckle sanding pad, please clean the dust and replace the old Nylon Buckle sanding pad before use, and these sandpapers are not suitable for adhesive sticker Nylon Buckle sanding pad. Specifications: Abrasive: aluminium oxide Size: 140 * 90mm Color: reddish brown Pre-punched with 5 holes Back technique: hook and loop Coarse, medium, fine, extra fine grades,5 sheets of each grit sanding paper: 40/ 60/ 80/ 100/ 120/ 180/ 240/ 320/ 400/ 800, total 50 pieces Package Contents: 5 x 40 Grit Mouse Sandpapers 5 x 60 Grit Mouse Sandpapers 5 x 80 Grit Mouse Sandpapers 5 x 100 Grit Mouse Sandpapers 5 x 120 Grit Mouse Sandpapers 5 x 180 Grit Mouse Sandpapers 5 x 240 Grit Mouse Sandpapers 5 x 320 Grit Mouse Sandpapers 5 x 400 Grit Mouse Sandpapers 5 x 800 Grit Mouse Sandpapers Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little erent from the real thing. The measurement allowed error is +/- 1-3cm.