Mabuchi Motors RS-555SH-21315A 12VDC MotorCondition:* New surplus stock, no OEM packaging. As pictured. Additional Notes:* Speed at 12 VDC: 5100 rpm +/- 3%* Speed / Torque: 4500 rpm / 420 g-cm* Stall torque: 980 g-cm* Dimensions including shaft: 3.035″ L x 1.48″ Dia.* Shaft dimensions: 0.43″ L x 0.13″ Dia. * Shaft notch: 0.314″ L x 0.04″ D.Mabuchi Motors RS-555SH-21315A