• Front side - M42x1 female thread
• Rear side - M26x1 male thread

Machined of high quality aluminium alloy.

This adapter allows using M42 lenses on Robot cameras with M26x1 lens mount. Infinity focus will be provided, but lens witness mark may come to unpredicatable position, not on the top.

BE CAREFUL! Robot cameras had many different mounts, and even 26mm thread can have different pitches. Internet sources say that older cameras have M26x0.75 thread while newer cameras have M26x1 thread. Please measure your mount diameter and pitch before purchasing the adapter.