The MagFilter Threaded 58mm Adapter Ring allows you to take advantage of the innovative MagFilter System with your own personal or favorite filters and it can support 58mm size. The MagFilter System uses a thin, low profile, metal adhesive ring to attach to the front of your compact camera lens.When you"re ready to use your filter, the MagFilter attaches through strong magnets built into the MagFilter Adapter Body. The kit will come with the threaded MagFilter adapter along with two adhesive metal rings - one spare.