This is the Gear Set for the Hitec HS-5975HB Ball Bearing Digital Servo.
FEATURES: Constructed of Karbonite for long life
INCLUDES: 1st, 2nd, 3rd and final output gears
REQUIRES: Installing in servo case updt
BOX DIMENSIONS: 2.25" W. X .63" H. X 3.00" L. BOX WEIGHT: .02 LBS.