This is our new low cost, but extremely DC Gear Motor. Specification:No-load Speed: 285RPM at 12 Volts;kg.cm: 0.8Power: 7.2W;No-load Current: 0.15A;Load Current: 0.6A;Reduction rate: 1: 17.4D Shaft Size: 15.3mm x 5.9mm/0.6 x 0.23 inches (L*D);Gearbox Size: 23mm x 36.8mm/ 0.91 x 1.46 inches (L*D);Motor Size: 33mm x 35.3mm/1.30 x 1.39 inches (L*D);Mounting Hole Size: M3 (not included).