This is the Hitec HS-1000SGT Ultra Heavy Duty Giant Scale Servo.
FEATURES: All aluminum EMI shielded case
Solid steel gears
Hand made cored motor for high reliability and durability
Non-prgrammable digital circuitry
Ideal for 1/5 scale vehicles, giant scale aircraft, and giant scale
boats
14.8V 2-cell LiPo capability
Water and dust resistant
Five pole carbon brush motor
INCLUDES: HS-1000SGT Servo, with 1.2" (30mm) Round Metal Horn, 1.6" (40mm)
Round Nylon Horn, 2.4" (61mm) 4-Point Nylon Horn, 1.8" (46.5mm)
Single Arm Nylon Horn, three Aluminum Collars, four each Rubber
Grommets, and 3x14mm Screws
Speed: 11.1v 0.26 sec/60° / 14.8v 0.19 sec/60°
Torque: 11.1v 1167 oz-in 84kg/cm / 14.8v 1528 oz-in 110 kg/cm
Dimensions: 2.52 x 1.30 x 2.87" (64 x 33 x 73mm)
Weight: 12.80oz (363g)