Box contents: 1 x M10 metal filter holder, 1 x Drop-In NanoPro MC Polarisations filter filter, 1 x drop-in frame (to be used when the polarising filter is not used), 1 x metal adapter ring in the ordered size (52, 55, 58, 62, 67, 72, 77, 82 mm), adapter rings are also available in parallel 1 x storage bag. The M10 filter holder represents the logical evolution of the famous Haida 100 filter holder. It allows up to 3 100 x 100 mm plug-in filters (or 150 x 100 mm for gradient filters) of all common filter manufacturers. 2 pre-assembled insertion slots, a third and the necessary longer screws are included. The mount has been optimised in its shape, so it is now possible to use 2 filters on most lenses, often even 3 for a 16-17mm focal length without vignetting (full format) - The adapter ring and mount itself are made of heavy duty black anodised aluminium alloy. The release lever is also made of solid metal and virtually indestructible. The M10 filter holder kit includes in addition to the holder itself, as well as an adapter ring, the brand new drop in NanoPro MC polarising filter of the highest quality. The NanoPro MC polarising filter is firmly integrated into the frame, and has a thumbscrew on the top which makes it easy to adjust the NanoPro MC polarising filter. The fact that it is placed practically in front of the lens effectively avoids the feared vignetting (shading the edges of the image by the filter or the system). For the new M10 system, Haida offers not only the polarising filter NanoPro MC, but in addition to other parallel models, for example different NanoPro MC neutral grey drop-in filter, a Nano.