The Kase Wolverine Master Kit 100mm features the newly designed K9 holder system, soft filter bag that can hold up to 10 filters, and 5 Kase Wolverine 100mm filters. This kit is geared towards someone who has spent a lot of time using filters and understands what each filter can do for their photography. This kit has a great selection that will allow you to really experiment using ND filters to control your shutter speed for classic long exposure photography. The K9 filter holder features a new method of holding a circular polariser where rather than being mounted as the last filter; the polariser is mounted at the back of the system which will allow you to have up to three Neutral Density or Grad filters in front of the polariser.