Fotodiox M Reverse 77 Nikon Kit RB2A 77MM Macro Ring with G and DX Type Lens Aperture Control, 52MM Cap UV Protector Fits

All metal designed Aperture Controller enables G-type and DX type lens with full aperture control in reverse mount. Precise Thread and Camera Mount Extreme Macro Photography Anodized Black Finishing 24 Month Manufacture Warranty