These horns are the popular style than go through foam core rudders, made of 2024-t3 aluminum and are machined to match common sizes. There are 2) Red rudder horns and 1) set of white donuts to end the pull-pull wire on. They come in these popular sizes.

RH 4" X.75 are 4" hole to hole and to be used with a 3/4" or less bevel.

RH 4-1/2" X.75 are 4-1/2" hole to hole and to be used with a 3/4" or less bevel.

RH 4-1/2" X1." are 4-1/2" hole to hole and to be used with a 1" or less bevel.