This is an aluminum double-sided 25 Spline servo horn from Savox. This heavy-duty aluminum servo horn is recommended for use with high torque servos. We don't like to think about the possibility of a part breaking, but there's no denying it, eventually the worst will happen and you will have to replace a part. Here at RC Planet, we strive to make replacing a part when the worst happens as easy as possible to let you focus on having fun.
Length from Center to Outer Hole: 38mm