Type: Brushless Inrunner MarineBearings or Bushings: Bearings# of Turns/Windings: 1.5-DTiming: 7.5 degree MaximumVoltage: 7.4-22.2VRPM/Volt (Kv): 2000KvCells: 2-6S LiPoSpeed Control: 120AWeight: 10.4 oz (294.8g)Overall Diameter: 1.42 in (36mm)Shaft Diameter: 0.20 in (5mm)Shaft Length: 0.61 in (15.5mm)Overall Length: 2.20 in (56mm)