Hitec HS755MG Giant Analogue Cored Servo 117g 14.4kg/0.23s 4.8V - 6.0V 2214520Hitec HS 755MG Giant Analogue Cored Servo 117g 14. 4kg 0. 23s 4. 8V 6. 0V 2214520 Ideal for large R C applications, the HS 755MG (metal gears) feature dual ball bearings and a water and dust resistant case. Hitec's expansive line up of servos include the HS 755HB and HS 755MG giant scale servos offered with either the revolutionary Karbonite gears or metal gears. Both are perfect for larger R C applications and feature dual ball bearings with a water