Maybe one of these similar products would be of interest:-

BENOISON EF Lens for Canon - 85mm f1.8 Medium Telephoto Lenses Manual Camera Portrait Lens for Canon EOS Rebel T8i T7i T7 T6 T6s T6i T3i T2i SL3 SL2 90D 80D 77D 4000D,1DX 5D 6D Mark II/III/IV etc

Fotodiox Pro Chrome (Type 2) Lens Mount Adapter, M42 Lens (42mm x1 Thread Screw) Lens to Canon EOS cameras, fits Canon EOS 1D, 1DS, Mark II, III, IV, 1DC, 1DX, D30, D60, 10D, 20D, 20DA, 30D, 40D, 50D, 60D, 60DA, 5D, Mark II, Mark III, 7D, Rebel XT, XTi, X

Canon EOS 1DX MK II SLR Camera - Black

Canon EOS 1DX Mark II Photo SLR Camera

Canon Eos 1Dx Iii Body