This is our new low cost, but extremely DC Gear Motor.Specification:No-load Speed: 320RPM at 24 Volts;kg.cm: 0.7Power: 7.2W;No-load Current: 0.1A;Load Current: 0.3A;D Shaft Size: 15mm x 5.9mm/0.59 x 0.23 inches (L*D);Gearbox Size: 27mm x 37mm/ 1.06 x 1.46 inches (L*D);Motor Size: 57mm x 37.3mm/2.24 x 1.47 inches (L*D);Mounting Hole Size: M3 (not included).