Features:There are two screws designed to hold the arm more secure to the servo shaft.
Specifications:Futaba Standard 25T CNC Aluminum Single Side Arm SO004 - black
Overall length: 35.6mm
Mounting holes spacing: at 9, 19, 24 mm (approx.) from center of the arm
the outter two holes are threaded.
* Fits the FUTABA servos with splined output shafts.
1 x servo horn