... shipping NRV063 VS Small Aluminium Alloy NRV Gear Reducers with VS Worm Extension Shaft Specifiction: Type:Worm Gear ... VSRatio:1:7.5,10,15,20,25,30,40,50,60,80,100Color:Blue/Silver Or ... AlloyWorm Gear-Copper-10-3#Worm-20CrMn Ti with carburizing and quenching, surface harness is 56-62HRCShaft ... midpoint of output shaft.When the reducer is with double output shafts,the resultant radial power at the ...