Specifications and features: 1) Power: 230V-50Hz/60Hz or 110V-60Hz 2) Carton packing with foam inside 3) Low noise 4) Novel structure 5) Easy installation and operation 6) Wide range of applications 7)Output torque:15N.m,20N.m,30N.m,40N.m,50N.m 8)maual function avalible.