Savox SC-1256TG High Torque Titanium Gear Standard Digital Servo Dimensions(mm): 40.3x20.2x37.2, Weight(g):52.4 Speed(@4.8/6.0V sec/60): .18/.15 Torque(@4.8/6.0V oz-in): 222.2/277.7 Gear: Titanium & Aluminum, Bearing: 2BB, Case: Aluminum, 25 Tooth Spline Troubleshooting step: Please Use Glitch buster for unstable transmission signals; 1 Year Warranty Against Manufacturing Defect