Worm Gearbox Motor 1.NMRV090,Ratio:7.5-100 2.ISO9001:2008,Warranty-1 ... year 3.Factory Price Since 1988-Delivery on time NMRV090 Worm Gearbox Motor ... , economical and durable(6) Stable transmission, quiet operation(7) High heat-radiating efficiency, high carrying ability(8) ... sending Specifiction: Type:Worm Gear Speed ReducerModel:NMRV050Ratio:7.5,10,15,20,25,30,40,50, ...