sanding disc(abrasive tools) Abrasive:aluminum oxide Size:2" Grit:#40,#60,#80,#120 ... pad holder and shaft material size grit Characters Application aluminum oxide abrasive cloth 2" #40,#60 water resistance, ... for low noise for grinding ,blending,leveling and finishing aluminum oxide abrasive cloth 2" #80,#120 water resistance,oil ... grinding ,blending,leveling and finishing sanding disc(abrasive tools)