Savox SC-0254mg High Torque Standard Size Digital Servo Dimensions(mm): 40.7X19.6X39.4, Weight(g): 49.0 Speed(@4.8/6.0V sec/60): .19/.14 Torque(@4.8/6.0V oz-in): 86.1/100.0 Gear: Metal, Bearing: 2BB, Case: Plastic, 25 Tooth Spline 1 Year Warranty Against Manufacturing Defect