Savox SAVSA1256TG Sa-1256TG High Torque, Coreless Motor, Titanium & Aluminum Gear Size Digital Servo, Minimized Backlash (0.15/277.7) Torque(@6V): 277.7 oz-in Speed(@6V): 0.15sec/60Deg Dimension LxWxH(mm): 40.3x20.2x37.2; weight(g): 52.4 Minimized backlash for ultra smooth and precise control surface operation! Coreless motor driven, Nominal operating voltage 4.8-6.0V Drivetrain: titanium Alloy and aluminum; Spline: 25T; bearing: 2BB; case: anodized aluminum body Ideal for Standard size servo airplane applications