Amazon.com : Fotasy Adjustable M42 Lens to Cannon EF-M Mount Adapter, M42 EFM, M42 EOS M Adapter, Compatible with Canon EF M Mount Mirrorless Cameras EOS M M1 M2 M3 M5 M6
FotodioX Pro Lens Mount Adapter for M42 Lens to M42-EOS-PRO-V2
M42 Screw Mount SLR Lens to Canon EOS Mount SLR Camera Body Adapter – Fotodiox, Inc. USA
Starizona Variable M42 T-Threaded Adapters
Amazon.co.jp: SHOTEN Mount Adapter M42-FX (M42 Mount Lens to Fujifilm X Mount Conversion) : Electronics
ASToptics M42 MALE TO 1.25"/ T2 ADAPTER
Fotodiox Pro Lens Mount Adapter - Leica M42 to Nikon Z
Astro Essentials M42 / T adapter for Sky-Watcher Refractors (M56) | First Light Optics
Fotodiox Lens Mount Adapter Compatible with M42 Type 2 Screw Mount SLR – Fotodiox, Inc. USA
Lens Adapter - M42 Screw Mount Lenses to Olympus 4/3 Mount Cameras – Fotodiox, Inc. USA