aluminum oxide waterproof abrasive sand paper 1.size:230*280(9"*11") 2.grit: 60#- ... 3000# 3.backing: latex latex waterproof abrasive sand paper/abrasive paper/waterproof abrasive paper/silicon carbide abrasive paper ... industries of automobile, aerospace, ship, furniture, leather, jewels, plastic, ceramics, glass ,textile, etc. Materials: Abrasives: silicon carbide Bond: resin over resin ...