These are parts for building a jig for bending a piece of solid copper wire into a folded dipole. Two of the "Folded Dipole Bend" parts need to be printed and one of the "Folded Dipole Brace" needs to be printed. The "bend" part should be spaced apart for the correct length needed. For example, for a 1/2 wave folded dipole on 441MHz, the length from outside bend to outside bend should be 33cm. The parts can be screwed into a piece of wood with drywall screws. A detailed guide for using the jig when building a yagi antenna can be found at:
The height of the "bend" part was sized for 6AWG (4.11mm) copper wire.