The NiSi Adapter Ring for SIGMA 12-24/4,5-5,6 is special designed for using together with the NiSi 150mm filter holder Nikon 14-24mm. Together they works perfect on Sigma 12-24/4,5-5,6.

Made from aluminum

For mor technical info about the holder, read on art no: 106958 - NISI FILTER HOLDER 150 FOR NIKON 14-24