... NRV063 VS Small Aluminium Alloy NRV Gear Reducers with VS Worm Extension Shaft Specifiction: Type:Worm Gear Speed ReducerModel:NRV063 VSRatio:1: ... RequestMaterial:Housing: Die-Cast Aluminum AlloyWorm Gear-Copper-10-3#Worm-20CrMn Ti with carburizing and quenching, surface harness is ... an order, our team will confirm with you about color, package,method of payment and delivery, then a sales contract ...