Nikon F-mount SLR Lens to Canon EOS Mount SLR Camera Body Adapter – Fotodiox, Inc. USA
K&F Concept M13194 Canon FD Lenses to Canon RF-Lens Mount Adapter - KENTFAITH
Fd-ai Mount Adapter Ring For Canon Fd Lens To Nikon F D7100/ D600/ D3200/ D800 - Lens Adapter - AliExpress
Fotodiox FD-NikF-Pro Pro Lens Mount Adapter - Canon FD & FL 35 mm SLR Lens To Nikon F Mount SLR Camera Body with Built in Aperture Control Dial - Walmart.com