Camera Accessories
M12 to C mount Adapter Monitor Interface M12 x 0.5 CCD Camera C-mount Lens Adapter Rings
Model Number: M12 to C Adapter M12 Size: M12*0.5 (mainly for some monitor thread) C-mount thread size: 25.4mm (mainly for some C-mount lens or camera) Application: to connect monitor with camera or lens.
https://www.bizrate.co.uk/cameraaccessories/m12-to-c-mount-adapter-oid35051221311.html