Smart Design: 5 holes on the sandpaper can collect dust more effectively, help keep the work surface clean, and the hook-and-loop sandpaper backing can help you change the paper easily and quickly Solid & amp; Durable: Use the right material, the sandpaper used in the triangle sander is equipped with thick paper base, made of high quality alumina and wear-resistant sand. The resin bonding system very resistant extends service life Triangular Mouse Design: Helps reach tight corners for efficient material removal, suitable for Dewalt, Bosch, Black + Decker, Makita Wide Range of Applications: Suitable for grinding and polishing metal, non-metal, wood, rubber, leather, plastic, stone, glass and other materials, suitable for various power tools, pneumatic tools, grinders, easy to use Packing: 100 pieces per box, 40/60/80/100/120, the classification of multi-grain multi-sanders can meet all polishing requirements, single piece size 5.33 " x 3 , 35 " (140 mm x 90 mm) Product description