standard or non standard taper bushing,made according to ISO, DIN,ANSI,JIS,BS standard C45 steel, steel,cast iron We professionally export different kinds of transmission components, such as standard sprockets, taper lock sprockets, special sprockets,motorcycle sprocket ,chain couplings, shafts, gears, box gears,roller chain, agriculture chain,leaf chain,conveyor chain,oliver chain,special chain, ...