This Kyosho servo horn is a 25-tooth metal replacement arm designed to mount directly onto a compatible servo output shaft. The clamp-style hub with a split collar and securing screw helps lock the horn firmly in position on the spline. Multiple attachment holes along the arm allow for adjustable linkage positioning to suit your setup. Includes the mounting screw. Features: 25T spline interface Clamp-style split collar with set screw Multiple linkage hole positions Metal construction 7/7/26 cs