Backing type: sandpaper About this item: Package Detail: This set include 10 pcs sandpaper of 60 grits. Product Material: These sandpapers are made from premium aluminium oxide abrasive, durable and anti-static, great for general grinding, polishing and sanding. The grit is larger, the polish effect is finer. Velcro Backed Design: Every one of them with hook and loop velcro backed design easy for installation and removal, durable and practical, can anti-static and anti-clogging. Easy to use: Hook and loop sandpaper backing makes grit removal & replacement quick and easy, and lengthens the life of the abrasive; 5 inch diameter, suitable for use with random orbit sanders. Wide Application: Come with coarse, medium, fine grades, work well on metal and non-metallic materials of various complex surface rust, paint, deburring, solder joints. widely used in wood, rubber, leather, plastic, stone, glass and other materials grinding, polishing.