Hitec HS-646WP Standard Metal Gear Ultra Torque Analog Servo (High Voltage) NIBHitec HS 646WP Standard Metal Gear Ultra Torque Analog Servo (High Voltage) NIB This is the Hitec HS 646WP Standard High Voltage Metal Gear Ultra Torque Analog Servo. This waterproof servo has what it takes to keep your radio control vehicle, airplane or robot watertight. With high torque, dual ball bearings and metal gears, this analog waterproof servo has the industrys first IP67 rating ranking them among the most durable and reliable servos for wet