The filter holder is used for setting the square filters onto the camera. With 3 slots. Unlike the traditional filter holder, this one can be detachable, make your shooting more freely. 100% New and Brand High Quality. Made of Durable material. Create Unique Effects with This Filter for Series P. It Allows You to Mount Up to 3 Filters. This Filter Holder is used to Clamp the Filter to Keep the Filter Clean and Avoid the Careless Touch to Leave the Fingerprint. This Filter Holder will Helpful to Creative a Perfect Photography. Usage: 1. Screw the ring adapter onto your lens. 2. Slide the filter holder on the ring adapter until it snap in place. 3. Slide the filter into one of the filter holder slots which is depended by your filter's size.