This Long Exposure Kit from Cokin is specifically compatible with the NX Series 100mm filter holder system. This kit consists of an NX Series Filter-holder, Circular polarizer filter (with pouch), & NUANCES Extreme ND1024 filter. As well as this, you are further afforded three adaptor rings (72mm, 77mm, & 82mm), an adaptor ring cap, filter system wallet, & a microfiber cloth for cleaning the various included tools.