... 2.Model:RV030,Ratio:7.5-100 NMRV030 Ratio 1:7.5-1:100 Aluminium Double Extension Worm Shaft with Flange Output Speed Reducer ... Worm Gearbox Reducer Characteristics:(1) With excellent quality ... ,0.18kw,0.25kw,0.37kw,0.55KW,0.75kwUsages:In industrial machine: Food stuff,Ceramics,chemical, aswell as packing, ...