can't say, but I think they're repros I got very many years ago, don't have that adjustable angle end [although I have had those on previous vintage trucks], they have a slightly curved stub with a nub on top
"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir "When we tug a single thing on an old truck, we find it falls off" ~ me Some TF series details & TF heater pics
