... 1.grit:60-600# 2.usage:Polishing welding line,metal 3.material:zirconia alumina,browm fused alumina OEM is ok ... sanding disc/abrasive disc/grinding disc2)Grit 60#-600#3)Material zirconia alumina,brown fused alumina,carborundum,calcination, ... 65m/s5)Dia100mm6)Specification52leaves,72leaves,36leaves7)Main applicationPolishing welding line,stainless steel,metal,,titanium alloy.8)Adventagewear-resisting, ...