The EXA-M42 Camera Detachable 3-bit Adapter Ring by Ace Photo allows you to mount Exakta lenses onto M42 screw mount cameras. This high-quality adapter ring is designed to ensure a secure and stable connection between your Exakta lens and M42 camera body. The detachable 3-bit design provides added convenience and versatility, allowing you to easily switch between different lenses. Made with durable materials, this adapter ring is built to last and can withstand regular use. Upgrade your photography gear with the EXA-M42 Camera Detachable 3-bit Adapter from Ace Photo for seamless compatibility between Exakta and M42 systems.