NMRV series worm gear with output shaft: 1.occupied little space 2.self locking 3.fast stop ... gearbox 2) High accuracy worm gear and worm shaft 3) Less noise and lower temperature increase 4) Easy mounting and linking, high efficiency 5) Power ... silver, green, and other color8)model number:NMR025,NMRV30,NMRV40,NMRV050,NMRV063,NMRV075,NMRV090,NMRV110,NMRV130 NMRV series worm gear with output shaft