... belt pulley, pilot bore pulley, taper bore Pulleys, taper bush, v-belt pulley,SPA SPB SPC SPZ, timing pulley, adjustable pulleywe ... SPB SPC AND SPZ),adjustable pulleys and multi wedge pulleys.v-belt pulley for taper bush,with solid hubs.standard ... sheaves.variable pith sheaves,EUROPE type sheaves.taper bushings.Material: 45C.GG25,GGG40,Aluminium,etc.surface treatment :black oxide,phosphate,painted ...