[40KG Digital RC Servo]--DS3240 full metal stainless steel gear 40kg digital rc servo 180 Degree. High control accuracy, good linearity and fast response. Operating Voltage: 4.8-6.8 DC Volts；Stall Torque (5V): 36kg/cm, Stall Torque (6.8V): 45kg/cm ; Speed : 0.2 sec/60°(5V) / 0.17 sec/60°(6.8V); Dead band: 3μs ; Control Angle: 180 Degree(500-2500µs). [Wide Application]--Widely used in rc airplanes, helicopters,fixed wing, quadcopters, aircraft,,automobiles,glider, climbing cars, boats, robot arm and other diy electronic project ect. Also perfectly compatible with 1/8 1/10 baja crawler rc car buggy truck ect. [High Quality and Performance]-- Equipped with high-precision stainless steel gear and potentiometers , high-resolution digital chip, waterproof rubber seals screws.,CNC aluminium middle shell. Low noise,high control accuracy, good linearity, fast response,smooth, stable,less wear and long life. [PWM Control System]--Controlled by pulse width modulation system. Pulse range is 500µs-2500µs. Control angle is 180 degree when pulse width 500µs-2500µs. So please make sure your controller pulse width can reach 2500µs. [ Package Included]--2 X DS3240MG 40KG Large Torque Digital Servo 180 Degree ; 2 X 25T Adjustable Metal Servo Arm ; 2 X Accessories Bag. Description Features: -High control accuracy, good linearity and fast response. High performance digital standard servo, can be common use in robots, mechanical arms, 1/8 1/10 climbing buggy cars and remote control toys. - Equipped with strong stainless steel gears,CNC aluminium middle shell,and Water proof rubber seals screws. PWM (Pulse Width Modulation) Controlled. The maximum control angle is 180 degree when pulse width 500µs-2500µs. So please make sure your controller can reach 2500µs. Sepcification: Model: DS3240MG Stall Torque (5V): 36kg/cm Stall Torque (6.8V): 45kg/cm Dead band: 3μs Control Angle:180 Degree Pulse : 500us-2500us Speed : 0.2 sec/60°(5V) / 0.17 sec/60°(6.8V) Operating Voltage: 4.8 ~ 6.8 DC Volts Weight: 60 g (2.12 oz) Motor Type: DC Motor Gear Type: Copper & Aluminum Working frequence: 1520μs / 333hz CE Certification: Yes RoHs:Yes wire length:17.7inches(45cm) Size: 40 x 20 x 40.5 mm ( 1.58 x 0.79 x 1.60 in) Package Included: 2 X DS3240MG 40KG Large Torque Digital Servo 2 X 25T Adjustable Metal Servo Arm 2 X Accessories Bag