Savox SH-1290MG Super Speed Metal Gear Standard Digital Servo Dimensions(mm): 40.3x20.2x37.2, Weight(g): 56.4 Speed(@4.8/6.0V sec/60): .06/.05 Torque(@4.8/6.0V oz-in): 55.5/69.4 Gear: Metal, Bearing: 2BB, Case: Aluminum, 25 Tooth Spline 1 Year Warranty Against Manufacturing Defect