This is the Gear Set for the Hitec HS-7235MH Mini Servo.

FEATURES: Metal construction Replaces damaged or worn gears

INCLUDES: 1st, 2nd, 3rd, and Output Gear Two Steel Pins Washer 2.5 x 8mm Screw  

BOX DIMENSIONS: 2.50" W. X .63" H. X 3.00" L. BOX WEIGHT: .02 LBS.