Savox SC-0251 High Torque Metal Gear Larger than Standard Digital Servo Dimensions(mm): 40.7X19.6X42.4, Weight(g): 61.0 Speed(@4.8/6.0Vsec/60): .20/.18 Torque(@4.8/6.0V oz-in): 180.5/222.2 Gear: Metal, Bearing: 2BB, Case: Plastic, 25 Tooth Spline 1 Year Warranty Against Manufacturing Defect