Futaba Spline Metal Servo Horn (Tapped) FMSH-01

These servo horns provide a high degree of strength compared to the normal plastic ones. The only problem with them is that ones you put them on they are almost impossible to remove, so make sure you center the servo properly before using them. Other than that minor issue they were a good product.

Doesn't slip, a bit expensive but much better than any plastic horn

Much stronger than plastic and reasonably priced.

high quality machining, highly recommended for any servo/Robotics applictions