Quick view Add to Cart Hitec HS-646WP High Torque Waterproof Metal Gear Analog Sport Servo HS-646WP $103.52 inc GST Our HS-646WP 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, our analog waterproof servos have the industry’s first IP67* rating ranking them... Compare