The 100mm Aluminium Filter Holder Foundation Kit V5 from NiSi is the most advanced 100mm filter holder with superb built quality. The NiSi Filter Holder V5 allows to use 3 x 100mm filters with circular polarizing filter in any combination. It is made from aviation-grade aluminium with single element processing by CNC manchine. This foundation kit comes complete with an ultra slim 86mm CPL filter and 4 adapter ring for most popular wide angle lenses (67mm, 72mm, 77mm and 82mm). The matte black frosted finish on the surface to minimize reflection. With the unique rotation wheel design, the CPL filter can be rotated via a cog on the back of the filter which mean no longer have to set the CPL filter before insert the other filter. Included is a free filter holder carry case.