[40KG Digital RC Servo ]--DS3240 full metal gear stainless steel gears digital rc servo. 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:270 Degree(500-2500µs) [Wide Application]--It can be widely used in rc airplanes, helicopters,fixed wing, quadcopters, aircraft,,automobiles,glider, 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, fast heat dissipation, high torque, compatibility and responsiveness [PWM Control System ]-- PWM (Pulse Width Modulation) Controlled. The maximum control angle is 270 degree when pulse width 500µs-2500µs. So please make sure your controller can reach 2500µs [Package Included]--2 X DS3240MG 40KG Digital RC Servo 270 Degree ; 2 X 25T Adjustable Metal Servo Arm ; 2 X Acessories Bag HOOYIJ 2Pack 40KG Digital Servo, DS3240MG Full Metal Gear High Torque Waterproof Steering RC Servo, for 1/8 1/10 Scale RC Car Crawler Buggy Airplane Control Angle 270° Description Features: -High control accuracy, good linearity and fast response. High performance digital standard servo, can be common use in robots, mechanical arms, climbing 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 270 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:270 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 270° 2 X 25T Adjustable Metal Servo Arm 2 X Acessories Bag