[xlmodel]-[custom]-[8888]Specifications: Model:NMRV63Type:Worm-Gear ReducerSpeed Ratio:5:1,7.5:1, 10:1, 15:1, 20:1, 25:1, 30 :1, 40:1, 50:1,60:1,80:1,100:1 (Please preference Ratio and shaft dimension you need)Input Bore Size:14/19mm (default=19mm)Input Flange Model:NEMA42 (For other Flange model, please depart a message)Output Shaft Diameter :25mmApplication:Matched with Servo/Stepper MotorGoods Color:Argentate