These are the Heavy Duty Straight Servo Horns for use on the Futaba S3156 Servo Micro Digital Hi-Torque Metal Gear (FUTM0656).

FEATURES: Nylon construction White in color

INCLUDES: Four Straight Mini Servo Horns Four 2x6mm Button Head Screws

REQUIRES: Installation on the servo

SPECS: Total Length: 41mm (1.6") Length from Center: 20mm (0.79")  

BOX DIMENSIONS: 2.38" W. X .25" H. X 3.88" L. BOX WEIGHT: .01 LBS.