To enhance your photography experience, you need this MASSA professional filter holder to fulfill your equipment!The filter holder is a square frame coupled to the lens by means of a screw-in adaptor ring. The filter frame is a variety of optional adapter rings which can be locked into place by two retaining screws or rotated as well as many optical resin filters. One takes round filters, which can be rotated in the groove. The three others take square filters which can be adjusted up or down at will. The filter holder is an original product. The filter holder is suitable for square P series filter holder camera lens, which will allow you to use your filter on multiple lenses so you don't have buy identical filters in various sizes. The lens filter holder is used to connect the camera lens with your camera. Made of high quality material, the filter kit is durable and reliable for long time use. It is very durable and practical, very easy to use and installation. Best filter adapter ring for you! This filter holder is hardness, light weight and durable, allowing you to use smaller size filters on lenses with a larger diameter thread. It is a great way to enhance your photographic experience! Just take one, you will never regret! Excellent P filter holder frame and affordable price, so what are you waiting for?