This is the Hitec HS-5805 Mega Scale Digital Metal Gear Servo.

FEATURES: For .60 class or larger aircraft, 1/4 scale car steering or throttle and gasoline powered boats Programmable digital amplifier with MOSFET drive Four metal gears with resin first gear Dual ball bearings Heavy duty horns and hardware Water and dust tight

INCLUDES: Hitec HS-5805 Mega Scale Servo with S Connector Mega Horn and Hardware set, HRCM6318 Y-Harness Instruction Sheet

REQUIRES: Installing in model, connecting linkage and connecting to receiver, see COMMENTS below

SPECS: Operating Speed: 0.19sec/60° @ 4.8V 0.14sec/60° @ 6.0V Output Torque: 19.8kg cm (275oz-in) @ 4.8V 24.7kg cm (343oz in) @ 6.0V Power Consumption: 800mA unloaded Size: 2.59 x 1.18 x 2.26" (66 x 30 x 57.6mm) Weight: 6.95oz (197g) Length of Four Point Horn: 2.4" (61mm) at longest point Length of Single Arm: 1.8" (47mm) from center of hole to end Diameter of Round Horn: 1.6" (39.8mm) Thickness of Horns: 0.20" (5mm)

COMMENTS: Due to the high power consumption of the servo, a NiCd or NiMH battery with at least 1200mAh (preferably 5-cells and 6V) must be used. Also, with a BEC equipped receiver the power should be fed directly to the servo without going through the BEC regulator. A Y-harness and instructions are provided with servo.  

BOX DIMENSIONS: 3.00" W. X 1.88" H. X 3.63" L. BOX WEIGHT: .51 LBS.