The kit includes: 1 x ND2 / ND 4 / ND 8 / ND16 neutral-density filter (52 mm), 1 x lens pen and 1 x filter bag. ND filters reduce the amount of light to the film without affecting the colour and allow for more control of the camera opening, time exposure and sensitivity settings sensor. Produce a lower depth of field or get a sharper photo. Cleaning cloth and lens pen: Can be used to clean all lens surfaces and remove fingerprints and most dirt. Filter bag: Convenient to store your filters, protect your filter lens from dust, knocks and scratches. Durable material. The filters are made of HD optical glass. Good level of transmittance. Aluminium alloy frame sealing ring for better tightness, avoiding drops or releases. Please note: The lens is not included. The filters can only be used with lenses with 52-mm thread size. Please check if your lens 52 mm in diameter.