Length 15 MM Breadth 12 MM Height 10 MM Output shaft: 5 MM Output shaft length: 6 MM Voltage: 3 V Current: 0.02 A (stall 0.19A) Speed: 19500 RPM Voltage: 4.5 V Current: 0.03 A (stall 0.28A) Speed: 28500 RPM Voltage: 6 V – 9V Current: 0.04 A (stall 0.37A) Speed: 35500 RPM Weight: 12 g OT-K20 Series DC motor Dimension: 8mm x 15 mm Operating Voltage: 1.5V-4.5V No-load Speed: 27000rpm Current: 0.08A At maximum efficiency speed: 20000rpm, current: 0.2A, torque: 1.2gcm Stall torque: 8gcm