They could be from the original equipment manufacturer or any number of aftermarket suppliers such as Weise
Referred to in IH Cub cultivator part catalogs as "CLAMP
New Old Stock Woods Mower Spindle Belt Guide
Replaces Case IH Toolbox part numbers: 43527DA
New 1 Point Fast Hitch Prong / Coupling Beam for International and IH Farmall 140
New Right Front Cultivator Gang for Farmall 140, 130, Super A, 100 Tractors, PO3102B They could be from theNew RIGHT Front Cultivator Gang for International and IH Farmall 140, 130, Super A, and 100 Tractors. Replaces Case IH Front Cultivator Gang part numbers: PO3102B, P03102B. USA MADE!!! This part is also referred to as "Universal Mounting Frame, Right" in 1 F144, 144, 452, and A 144 IH Cultivator Parts Catalogs.