TYC-50 Synchronous Motor 12V AC 10-12RPM CW/CCW Torque 4kg.cm 4W Small Electric Motor Working Voltage: AC 12V Speed: 10/12r/min;CW/CCW (UNCONTROLLABLE) Shaft Length: 16mm;Shaft Diameter: 7mm N.W. Weight: 0.09KG GuaranteeAny quanlity problem,we guarantee 100% unconditional refund or resend service.