【Package Includes】 Each box contains 108 pieces of triangle sandpaper of 6 grades from coarse to fine, sander paper pads which are 40#, 60#, 80#, 120#, 180#, 240# grits, 18 of each type,18 pieces for each grade, enough to meet your different polishing and sanding needs 【Material and Grit Mark】 The 6 holes triangle sandpaper aluminium oxide abrasive made, durable and anti-static; with grit mark on the back, it is easy for you to use according to your real needs. (note, the smaller the number, the rougher the polishing effect, the larger the number, the finer the polishing effect) 【Detail Sander Paper Size】 The sanding sheets 93 * 93 * 93mm, pre-punched with 6 holes for dust extraction, suitable for 90mm triangle sanders, compatible with all standard Delta sanders for the predesignated size 【Paper Backing】 Sandpaper with thick E paper backing, hook and loop, sturdy and durable, which not easily damaged when polished; easy and quick to stick, high-strength resin bonding system increases the sandpaper service life 【Wide Application】The sanders paper is suitable for grinding and polishing metal, non-metallic, wood, rubber, leather, plastics, stone, glass and other materials. Very practical and you can order according to your needs