KWEN 43mm Close-Up Adapter Rings Extension Tube for Nikon 1 - Black + Silver
One set of five sections front and rear section is interface one for for lens and another camera; Interface including Nikon Canon Pentax etc; The middle three adapters are close-up rings can be combined freely; Can be used for a remake using SLR extension rings; Combined with a variety of header and telephoto head the installation in the middle of the lens and camera.