Small volume but large torque Motor gets constant under the rated frequency, not affected by voltage With pure copper wire production, metal gear, constant speed 68KTYZ Voltage: AC220V Frenquency: 50Hz~60Hz Current: 0.5A Power: 28W Speed: 2.5RPM/Min Motor Dimension: 60mm*68mm Shaft Type: D-Type (Edge Milling: 0.5MM) Output Shaft Diameter: 7MM Output Shaft Length: 19mm colour:black Material:metal Package Contents: 1 * Synchronous Motor Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.