•Aluminum oxide grain

•Open coat structure prevents loading,fast material removal

•Used in ferrous and non-ferrous metals,wood, fiberglass

•Backing:0.6mm-0.8mm fibergalss backing

•Size:4" 4.5" 5" 6" 7" with all kinds holes

•Grit:16# 24# 36# 40# 50# 60# 80# 100# 120# 150# 180# 220# 280# 320#