Savox SB-2272MG Lightning Speed Brushless Metal Gear Standard Digital Servo High Voltage Dimensions(mm): 40.3x20.2x38.5, Weight(g): 66.0 Speed (@4.8/6.0/7.4V sec/60): .055/.045/.032 Torque (@4.8/6.0/7.4V oz-in): 41.7/69.4/97.2 Gear: Metal, Bearing: 2BB, Case: Full Aluminum, 25 Tooth Spline 1 Year Warranty Against Manufacturing Defect