... shape 4. heat dissipation 5. high performance High torque speed reducer with motor for industrial parts NMRV worm gear box with output shaft ... for silver, green, and other color8)model number:NMR025,NMRV30,NMRV40,NMRV050,NMRV063,NMRV075,NMRV090,NMRV110,NMRV130 Factory outlook:office:Fair:speed reducer ...