This is an adjustable control horn. It is recommended for .60 powered aircraft and smaller.
Features: Nylon and steel construction
Requires: Flat head (slotted) screwdriver for the screws and 4mm wrench for the nuts
Note: This adjustable control horn mounts between two molded nylon pads for a strong solid mount. A 1-1/2, 5-40 bolt allows you the full range of height adjustment.
The control horns are a triangle shape. The round refers to the recessed portion for the screw. The hex refers to the recessed portion for the nut. Both style of control horns are identical with the exception of the hex and round recessed portions.