HOYA Twin Filter Kit comes with 2 filters in one package. Each kit has a Hoya Multicoated Slim UV & Slim Circular Polarising Filter.
A UV(C) filter is used to intercept UV light and is done a general protection of the lens. Made of high quality UV cut and anti-reflective coat is given both sides. It will not affect the quality of your image.
Circular Polarizer Filter
A circular polarizer filter is a basic filter with polarization effect to eliminate unwanted reflections or to enhance contrast of the sky and nature objects.
Its frame thickness is slim than a previous Filter Kit One.