This is the HS-7980TH Monster Torque Coreless Motor Titanium Gear Servo from Hitec.

FEATURES: For use in high performance giant scale aircraft, 1/8 scale truggies, buggies, monster trucks, large aircraft, fast power boats and any other application requiring 600+ oz/in of torque High resolution "G2.5" 12 bit generation programmable digital circuit, programmable features include; Dead Band Width Rotation Direction & Speed End Points Neutral Point Fail Safe On/Off Fail Safe Point Resolution* Overload Protection* *These features are only programmable with the HFP-20, HPP-20 or HPP-21 (HRCM4420, HRCM4421) programmers Designed to operate on a two cell LiPo Pack 7.4V optimized coreless motor Titanium gear train (MK first gear) Integrated heatsink case with eight O-rings to protect against dust dirt and fuel

INCLUDES: HS-7980TH Monster Torque Servo with assorted round, double and single arm servo horns, mounting hardware and programming instruction sheet

REQUIRES: Porgramming, installing in application and connecting control linkage

SPECS: 6.0V 7.4V Speed: 0.20 sec 0.17 sec Torque: 500 oz/in (38 kg/cm) 611 oz/in (46 kg/cm) Dimensions: 1.72 x 0.88 x 1.57" (43.69 x 22.35 x 39.8mm) Weight: 2.70oz (76.54g)  

BOX DIMENSIONS: 3.13" W. X 1.88" H. X 4.00" L. BOX WEIGHT: .37 LBS.