This tire changer is auto and manual, Three rubbers , Rim diameter :10-22" , Rim width :3"-12" Power supply : 220v/380v 50HzMotor power : 0.75-1.1kwOperating pressare :0.8-1MpaBear-remover cylinder : 2500kgRim diameter:10"-22"Rim width :3"-12"Maximum wheel diameter :980mmNet weight :180kgNoise :<70dB CZ-505 tire changer