NEW DESIGN: 11 holes in the sandpaper to collect dust more efficiently, help keep the work surface clean, the sandpaper holder with velcro helps you change the sandpaper easily and quickly < p> STURDY AND DURABLE: With the right materials, the sandpaper used in the triangular sander has a thick paper base made of high quality aluminum oxide and non-abrasive sand. Durable resin bonding system extends life 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 operate < p> Compatible with various models: triangle mouse for Bosch, PSM 100A, PSM 200 AES, Psm 18, all Makita DTM51Z oscillating multi-tools, Dewalt Dwe315KT, Dewalt DCS355M1-GB, Tacklife PMT01B, etc. For all needs: all grits, from coarse to fine, including 5 sheets each: 40# 60# 80# 120# 180#, 152*105mm, total 50 sheets