This is the Savox SV-1270TG Digital High Voltage "Monster Torque" Titanium Gear Servo. Built to handle extreme requirements, this servo delivers.
Super strong, precision made titanium gears provide durability that will survive heavy use. Ideal for large-scale airplane, 1/8 truck, and Monster Truck applications Capable of HV operation. The servo that racers desire. Torque @ 6v - 26.0kg/361.1oz-in Torque @ 7.4v - 35.0kg/486.1oz-in Speed @ 6v - 0.14 sec/60 deg Speed @ 7.4v - 0.11 sec/60 deg Dimensions L x W x H (mm): 40.3 x 20.2 x 37.2 Weight: 56.0g