... ,stainless, aluminium Easy fitting,long life Cup brush abrasive wire has different specifications:1.Thread: M14x1.25 ... 2mm)3.Cup color:red, blue,orange,black,zinc plated etc4.wire material:1)S:steel wire 0 ... wire:0.3,0.35,0.5mm6)AO:Abrasive filaments,oxide aluminium ,80grits,120grits and etc.7 ... )SIL:Abrasive filaments,Sillcon carbide,80grits,120 grits, and etc ...