These wooden control horns at 1.3mm thick are just a bit more heavy duty than most other wooden control horns. The addition of a base plate makes for a solid mounting through foam up to 3mm thick. The control linkage holes are just 0.5mm in diameter. These can be drilled out for a clevis with a 1mm pin, but are also suitable as is for Z-bends made from 0.5mm piano wire.