In the package I received there was the M10 kit with eco-leather case included. The basic kit for Haida ND M10 filter holders includes:
-The adapter ring that should be mounted on the lens. The size of the ring is suitable for different lens diameters (from 52 mm to 82 mm). For example my adapter ring is 82 mm taken for my tamron 24/70
-Light protection or Drop-in circular filter (dedicated exclusively to this system) that you can insert in the space between the adapter ring and the support.
-The filter that can be ND (0.9, 1.8, 3.0, 4.5), GND (0.9, 1.2), CPL, Clear Night or ND + CPL (0.9, 1.8).In this case I received a CPL and an ND 1000
-The portafilter in which the plate filters can be inserted
The assembly is very simple, it will not be enough (1) to screw the adapter ring to the lens, (2) insert the holder on it by pulling the red lever and finally (3) introduce our drop-in filter holding the two red keys.