This was in a box of lures that I bought and I originally thought they were Vibrax/Blue Fox minnow spins.

However, the spoons have no stamping on them, and there is quite a bit of variance in the minnow sizes and the spinner shafts seems longer than the commercial versions.

So are these a knockoff (which company) or were these a kit, or did somebody make the minnow bodies themselves (if so, how?)?