This is the HS-5084MG Digital Tail Rotor Servo from Hitec with Universal Connector. Connector is compatible with all modern receivers and wiring accessories. FEATURES: Lightweight and small; ideal for Gyros or Micro Cars Metal gears Aluminum output gear Shock protected POT Non-Programmable INCLUDES: One HS-5084MG Digital Tail Rotor Servo Two screws, grommets and eyelets Two servo arms and one wheel SPECS: L: 29mm x W: 13mm x H: 30mm (1.14" x 0.51" x 1.18") Transit: 0.07 sec/60° (4.8V) 0.05 sec/60° (6.0V) Torque @ 4.8V: 1.5 kg-cm, (20.8 oz-in) @ 6.0V: 1.9 kg-cm, (26.39 oz-in) Weight: 21.9g (0.77oz) COMMENTS: The following replacement parts are available; Gear Set, HRCM6388 Horn Set, HRCM6326 JiM 11.20.08 ir/jxs