Hitec D845WP Giant Digital Cored Servo 227g 50kg/0.17s 4.8V - 7.4VHitec D845WP Giant Digital Cored Servo 227g 50kg 0. 17s 4. 8V 7. 4V 2221305 A programmable, 32 bit, monster torque, waterproof, steel gear, mega scale servo Part of Hitec's D Series servo range, the steel gear D 845WP features industry leading high resolution, state of the art ultra response technology, a 32 bit MCU and a 12 bit ADC for unprecedented programmability and flexibility. The result is a significantly smoother movement and a 4. 8 8. 4 volt