This is the HS-5496MH High Torque, High Volt Metal Gear Servo from Hitec.

FEATURES: Designed to be powered from a 2-cell 7.4V LiPo battery for extra speed and power Ideal for 1/10 to 1/8 scale on- and off-road vehicles, larger sport helis and large scale aerobatic aircraft up to 25% Programmable features include; Dead Band Width, Rotation Direction, Rotation Speed, End Points/Neutral Points, Fail Safe On/Off, Fail Safe Point, (requires Hitec programmer HFP20, HPP20 or HPP21 HRCM4420) Heavy duty metal gear train (MK first gear)

INCLUDES: HS-5696MH High Torque, High Volt Metal Gear Servo with Connector 0.94" (24mm) round horn, 1.8" (45mm) round horn, 1.7 (44mm) 4- point horn, 0.98" (25mm) single arm horn, 2.3" (59mm) double arm horn, 0.87" (22mm) mounting hardware and instruction sheet

REQUIRES: Installing in model and connecting linkage

SPECS: Speed: 6.0V, 0.20 sec/60° 7.4V, 0.17 sec/60° Torque: 6.0V, 88 oz-in (6.0 kg-cm) 7.4V, 99 oz-in (7.2 kg-cm) Size: 1.57 x 0.78 x 1.49" (39.8 x 19.8 x 38mm) Weight: 1.84oz (52g)  

BOX DIMENSIONS: 2.00" W. X 1.88" H. X 2.50" L. BOX WEIGHT: .18 LBS.