Premium Aluminum Oxide: Durable aluminum oxide grain provides faster cutting, durable and anti-static, anti-sticking - a special anti-clog stearate coating increases performance and durability Durable: We use the right material, the triangle sander sandpaper is equipped with a thick paper base, made of high-quality alumina with abrasion-resistant sand, the high-strength resin bond system increases the service life Easily Change: The durable reverse makes changing sanding sheets easier, convenient and faster Different Grit Sanding Triangles: This wood sandpaper includes 40/60/80/120/240 grit types can meet all polishing requirements Function: Suitable for grinding and polishing metal, non-metal, wood, rubber, leather, plastics, stone, glass and other materials. Very Practical and Efficient Aluminum Oxide Sandpaper Features The self-adhesive hook and loop sandpaper backing allows for quick and easy removal and replacement. A special slick coating is designed to prevent clogging and loading and improve durability. The high-strength resin bond system provides superior grain support. Pre-punched with 11 holes for uniform dust extraction, extending sanding life and increasing productivity. Multiple Grit Sanding Triangles Assortment Sandpaper included 40/60/80/120/240 grit, 5 pieces of each grit, can maximally meet your polishing requirements and achieve a good sanding effect. Rough to Fine. Specifications: Material: Aluminum Oxide Sandpaper Backing Technique: Hook and Loop Number of Holes: 11 Holes Size: 105 x 152 mm Package Includes: (25 pieces sanding sheets in total) 5 x 40 Grit 5 x 60 Grit 5 x 80 Grit 5 x 120 Grit 5 x 240 Grit