M42x1 female thread to Nikon 1 camera mount adapter for helicoids

• Front side - M42x1 female thread
• Rear side - Nikon 1 mount

This adapter is purposed to install a focusing helicoid with M42x1 male thread onto a camera with Nikon 1 mount.

This adapter is made as short as possible to allow some space for a lens installed into a helicoid. It does NOT provide infinity focus for M42 lenses.

Machined from high qaulity aluminium alloyWhy aluminium?.