This is the Hitec HS-8330SH High Voltage, High Response Super Speed Digital Servo.
FEATURES: Durable steel gears with dual ball bearings Ultra hardness gear shaft with three axial metal bushings Water and dust resistant Non-programmable Motor heat sink
INCLUDES: HS-8335SH Servo with 1.7" (44mm) Double Arm Horn, 1.4" (36mm) Round Horn, 0.98" (25mm) Single Arm Horn, 1.4" (36mm) 4-Point Horn, and four each Eyelets, Grommets, and Mounting Screws
SPECS: 6.0V 7.4V Operating Speed: 0.085sec/60° 0.07sec/60° Output Torque: 138.87oz-in (10.0kg-cm) 180.53oz-in (13.0kg-cm) Weight: 2.32oz (66.0g) Dimensions: 1.57 x 0.79 x 1.45" (40.0 x 20.0 x 37.0mm) Horn Screw Diameter: 3mm Number of Teeth on Spline: 25
BOX DIMENSIONS: 2.88" W. X 1.38" H. X 3.63" L. BOX WEIGHT: .26 LBS.