【Aluminum Oxide Sanding Pad】Has strong water resistance and can be used in both wet and dry environments. The newly developed adhesive improves the wear resistance and smoothness of the sanding pad, with high polishing efficiency, good finish and long life. 【Triangle Sandpaper Size】90 * 90 * 90 mm triangular sandpaper, with 6 dust-proof holes - to prevent clogging of the triangular sandpaper - ideal for sanding with DELTA sander, suitable for triangular sander, abrasives for triangular sander. [Backing] Triangle sandpaper with hook and loop, easy and quick to apply, sturdy, durable and practical, a good choice for sanding and polishing with triangular sandpaper. 【100 Mixed Sandpaper Pads】Each pack contains 100 triangular sandpaper pads, 10 grades from coarse to Fine, 40/60/80/100/120/150/180/240/320/400 grit, meeting almost all your general polishing needs. [Wide Range of Uses] Triangular abrasives are suitable for grinding, polishing and rust removal from metals and non-metals: