... disc(abrasive tools) Abrasive:aluminum oxide Size:2" Grit:#40,#60,#80,#120 Character:water resistance,oil resistance 4PCs 2"Sanding disc ... with pad holder and shaft material size grit Characters Application aluminum oxide abrasive cloth ... grinding ,blending,leveling and finishing aluminum oxide abrasive cloth 2" #80,#120 water resistance, ... leveling and finishing sanding disc(abrasive tools)