Planetary motors PG-45ZY45 Voltage: 12V, 24V Motor Speed: 3000rpm, 6000rpm, 8000rpm Reduction Ratio: 4k, 16k, 22.5k, 64k, 90k, 107k, 256k, 304k,361k,428k,509k Output speed: 1-1000rpm Appliance: Automat, Electrical Controlled valve and Robot, Door Locks