1VL40x1/2 1VL40-1/2 1/2" Bore Variable Pitch Sheave 1 Groove Finished Bore

Very reasonably priced for a well-made good quality pulley. The adjustable sheaves run pretty true to each other and very true to the bore. There is very little wobble or vibration with this pulley.I used this to replace a drive fan pulley on an evaporative cooler.

Very well made