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. Choose the size you need, and the kit will come with the threaded MagFilter adapter along with (2) adhesive metal rings - one spare.[NEW] We"ve just added a new 49mm MagFilter Threaded Adapter. This version mounts to the same Lens Ring Mount as our 36mm CPL adapter to fit small cameras such as the Canon Powershot S95 / S100 /S110Listing Includes: (2) 2 pieces 49 mm Adhesive Metal Rings (attaches to front of camera)