... Alloy 2.mini gearbox 3.OEM Mic Worm Wheel Gearbox NMRV+NMRV30/50 Specifiction: Type:Worm Gear Speed ReducerModel:NMRV+NMRV30/50Ratio:1:7 ... .5,10,15,20,25,30,40,50,60,80 ... 255610331981273535564187463358443047108820872881374544104880615540351204Ratio C. Shaft Direction D. Order Quantity. 2.Our Export Service Team will ...