DC motors models RS-380 or RS-385, Carbon brush dc motor, Cylinder, Diameter 27.5mm, length 37.5mm, shaft 2.3mm, fixing screw 2-M2.5mm. Operating voltage: 2.4~40V, At no load Speed 3,000~25,000 r.p.m, Output about 1.5~50 W. fit for hair dryer, massager, vibrator, vending machine, popcorn maker, annunciator, drill & screw driver, egg mixer, etc.