CHANCS TYC-50 Small Synchronous Electric Motor 110V AC 2.5-3RPM CW Gear Synchro Motor Working Voltage: AC 110-127V Speed: 2.5/3r/min;CW (Fixed) Shaft Hole Screw Thread: M4 Shaft Length: 16mm;Shaft Diameter: 7mm GuaranteeAny quanlity problem,we guarantee 100% unconditional refund or resend service.