Motor Parameters: When the power supply is 3V, Current: 0.04A, No-load Speed: 52RPM When the power supply is 6V, Current: 0.04A, No-load Speed: 104RPM Voltage: 3V-6V Motor Shaft Diameter: 3mm D-type Shaft Motor Shaft Length: 9mm Conductor Length: approx. 8-14cm Overall Size: 24 x12 x10mm (1inch 25.4mm) Weight: 30g Note: Light shooting and different displays may causethe color of the item in the picture a little different from the real thing.The measurement allowed error is+ / -1-3cm.