Fotodiox Lens Mount Adapter Compatible with Novoflex Fast-Focusing Rif – Fotodiox, Inc. USA
K&f Concept Lens Mount Adapter For M42 (zeiss,pentax,praktica,mamiya,zenit) Screw Mount Lenses To Fujifilm Microless Cameras - Lens Adapter - AliExpress
Amazon.com: Akozon M39?NIK Z Lens Adapter Ring for Zenit M39 Mount Lens to Fit for Nikon Z Mount Camera : Electronics
Generic M42 - Nikon F (M42-NIK) Adapter – Kamerastore
Amazon.com : M42-FD Lens Adapter, M42-FD M42 Screw Lens for Canon FD F-1 A-1 T60 FTB Film Camera Adapter, for Zeiss, for Pentax, for Praktica, for Mamiya, for Zenit : Electronics
Free STL file ADAPTER FOR CANON EF LENS TO A EYEPIECE 1.25in・3D printing design to download・Cults