This is the Savox SV-1271SG Standard Digital Steel Gear High Voltage Servo. The SV-1271SG is a relatively lightweight servo for its size and features water proofing, steel gears, ball bearings and a fast 0.08 response time with nearly 350 ounces of torque on 7.4V 2S LiPo power.
Features:
Specifications:
Dimensions(mm): 40.3x20.2x37.2
Weight(g): 63.0
Speed(@6.0V sec/60): .11
Torque(@6.0V oz-in): 277.7
Speed(@7.4V sec/60): .08
Torque(@7.4V oz-in): 347.2
Gear: Unique Steel
Bearing: 2BB
Case: Aluminum
Spline: 25 Tooth