Kimbrough Products. This servo saver does not have any holes drilled in it, allowing you to add holes where needed. It comes with a small tree with three different splines on it ...
This is a replacement Yokomo Servo Saver Horn, ...
and is intended for use with the Yokomo R12 1/12 scale pan car. This servo saver horn includes adapter inserts that allow it to be used with 23, 24 and 25 tooth ...