Premium Aluminum Oxide: Durable aluminum oxide grit provides faster cutting, long lasting and anti-static, anti-sticking - special anti-clogging stearate coating increases performance and durability Durable: The right material is used, the triangle sander sandpaper is equipped with a thick paper base, made of high quality alumina with abrasion resistant sand, the resin bonding system to high strength increases lifespan Facliment Change: Durable reverse makes changing sanding sheets easier, convenient and faster Different Grit Sanding Triangles: This wood sandpaper includes 40/60/80/120/180/240 grit types. Can satisfy all polishing requirements Function: Suitable for grinding and polishing metal, non-metal, wood, rubber, leather, plastics, stone, glass and other materials. Very practical and effective Product Zirconium Alumina Sandpaper Features The self-gripping sandpaper backing with hook-and-loop closures allow for quick and easy removal and replacement. A special steat coating is designed to prevent clogging and loading and improve durability. The system of High-strength resin bond provides superior grain support. Pre-punched with 11 holes for uniform dust extraction, extending sanding life and increasing productivity. < p>Multi-Grit Sanding Triangles Assortment Sanding paper included 40/60/80/120/180/240 grit, 30 pieces of each grit, can maximally satisfy your polishing and polishing requirements. achieve good sanding effect from rough to fine. Specifications: Material: Zirconia Alumina Sandpaper Back Technique: Hook and Loop Number of holes: 11 holes Size: 105 x 152 mm Package includes: (180 pieces sanding sheets in total) 30 x 40 grits< /p> 30 x 60 grit 30 x 80 grit 30 x 120 grit 30 x 180 grit 30 x 240 grit