Features: Mechanical arms, climbing for cars and remote control toys.Speed: 0.16 second/60°(5v)/0.14second/60°(6.8v). The main features are fast heat dissipation, big high torque compatibility, sensitive and sensitive ect. Great performance programmable standard digita servo, can be common use in robots. High-well-controlled rotation, 270 degree rotation. 360 degree rotation when turned off, perfect for joint robot activities. Excellent choice for university professors and students who are interested in developing software for robot parts. Specifications: CNC aluminum medium for shell, Updated version-advanced linearity and precision with precision Large-torque maximum torque is up to 21.5 kg/for cm (298.5 oz/in) 6.8 v Gear Type: Copper & Aluminum Potentiometers, stable, low noise, waterproof Working frequency: 1520s s/333 hz Stopping torque (5 v): 19 kg/for cm (263.8 oz/in) Waterproof rubber sealing screws CE Certification: Yes Article: DS3218MG Size: 40x20x40.5mm (1.58x0.79x1.60 in) Engine Type: for DC Engine Package Includes: 1 Pcs HV Coreless Digital Servo . note: Please allow 0-1cm error due to manual measurement. Make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!