1.NMRV Aluminium Double Extension Worm Shaft with Flange Output Speed Reducer Worm Gearbox Reducer 2.Model:RV030,Ratio:7.5-100 ... .5-1:100 Aluminium Double Extension Worm Shaft with Flange Output Speed Reducer Worm Gearbox Reducer Characteristics:(1) With excellent quality(2 ... .18kw,0.25kw,0.37kw,0.55KW,0.75kwUsages:In industrial machine: Food stuff,Ceramics,chemical, aswell as packing, printing, ...