Worm Gearbox Reducer 1,Material & Technology from TaiWan 2,Can be with motor,clutch,brake 3,OEM available 4,1-year warranty Factory Directly ... ,40,50,63,75,90,110,130Ratio:5,7.5,10,15,20,25,30,40,50,60,80,100Color:Blue ... /Silver WhiteMaterial:Aluminium AlloyWorm Gear- Cooper-10-3Worm-20CrMnTi with carburizing and quenching, surface hardness is 56 ...