[ Assorted Grit Sanding Discs ] : 5 Inch Sanding Discs set includes 9 different grades including 10 Pcs of 40 grit, 60 grit, 320 grit, 400 grit and 600 grit; 25 Pcs of 80 grit, 120 grit ,180 grit and 240 grits . providing you with a range of to meet your various sanding needs. [ Hook and loop backing ] :5 inch 8 hole sanding disc back is a industrial strength hook and loop ,preventing falling off and prevent the dust jam and flying during use. [ Superior Durability ] :Sandpaper discs made from aluminium oxide abrasive, durable and anti-clogging. satisfy almost all your general grinding and polishing requirements. [ Universal compatibility ]: 5 In Sanding Discs set fit universal orbital sander. [ Wide applications ]: 5 In Sanding Discs set fit universal orbital sander widely used in the grinding and polishing of metal and non-metal, wood, rubber, leather, plastic, stone, glass and other materials. Colour:Red-brown Material:Aluminum oxide Package Contents: 150 x 5in Sanding Discs Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.