Features: [Premium Quality & Brilliant Performance] The RC servo adopt extremely strong stainless steel gear and full-body metal shell, 50kg torque, make sure long life and durability, high precision. [Long Service Life] The internal brushless motor has strong torque and its service life is 10 times that of the coreless motor of the same level. [Powerful Function] Fully waterproof design, its waterproof level is IP67, the steering gear can be completely immersed in water. [Multiple Application] It is used to change the torque, speed, and angle of RC toys, robots, mechanical arms, and other remote control toys. [Extra Accessory] A spare steel gear is provided as a gift, so there is no need to worry about no parts to be replaced when unexpected situations occur to ensure the normal use of the steering gear. [After-sales Service Guarantee] Any problem, please contact our store without hesitation. Honor to serve you! Specification: Item Name: 50kg Digital Servo Model: GX3350BLS Main Material: Metal, Stainless Steel Size: 4 x 3.5 x 2 cm Weight: 78 g Cable Length: 285mm Operating Voltage: 5-8.4VVolts Operating Speed (5.0V)0.13sec/ 60 at no load Operating Speed (6.0V): 0.12sec / 60 at no load Operating Speed (8.4V): 0.1sec / 60 at no load Stall Torque (5.0V) 40 kg/cm Stall Torque (6.0V): 45kg/cm Stall Torque (8.4V): 50kg/cm Pulse Width Range: 500~2500sec Neutral Position: 1500s Operating Degree: 180 (500~2500sec) Dead Band Width: 2s Working Frequency: 50-330Hz Rotation Direction: Counterclockwise (500~2500s) Gear Ratio: 314 Bearing: Double Bearing Motor: Brushless Motor Waterproof Performance: IP67 Package Information: Package Size: 7.9 x 6 x 3.8 cm Package Weight: 134 g Note: * There could be a few deviations due to manual measurement or slight color difference owing to photographing condition. Thank you for your understanding. Package List: 1 x 50kg Digital Servo 1 x 25T Servo Arm 1 set x Spare Gears Kit