Features 1.[Protection Function] Servo has anti blocking and anti burning protection function, equipped with full CNC accuracy gears, more wear resistant, not easy to break sweeping teeth. 2.[Kit Configuration] Servo kit includes servo kit, spare gear and shaft pin, 15t metal servo arm inside, rich items and convenient to use. 3.[High Speed] 120KG high torsion digital waterproof servo with brushless motor, much faster compared with ordinary servo. 4.[IPX8 Waterproof] Servo is fully waterproof design with waterproof function, waterproof grade IPX8, the servo can be completely submerged in water. 5.[Widely Used] Servo can be used to change the torsion, speed and angle of remote control toys, robots, robotic arms and other remote control toys. Specification Item Type: 120kg Servo Shell Material: Aluminum Alloy Color: Black Product Size: Approx. 60x30x54mm/2.4x1.2x2.1in (Without Cable, Mounting Wings on Both Sides and Top Gear) Operating Voltage: DC 5V to 8.4V Rotation Angle: 180 Degrees Number of Teeth: 15T Deadband: 3μs Pulse Width: 500-2500μs Operating Frequency: 1520μs/330Hz Motor: High Performance Brushless Motor Gear: Full Steel Teeth Potentiometer: High Performance Potentiometer Experimental Data: Speed (6V): 0.135sec/60 Degrees Speed (7.4V): 0.11 sec/60 Degrees Speed (8.4V): 0.1 sec/60 Degrees Blocking Torsion (6V): 90kg/198.4lb cm Plugging Torsion (7.4V): 110kg/242.5lb cm Plugging Torsion (8.4V): 120kg/264.6lb cm Connection Line: JR Line 300mm/11.8in Applicable: 1/5 1/6 RC Car, Robot, Boat, Helicopter, etc. Package List 1 x Servo 2 x Servo Arm 4 x Rubber Pad 2 x Spare Gear 2 x Pins 6 x Screws