This Square Filter holder with slim profile frame is designed for wide angle lense, to used with one filter at a time.

This filter holders fit onto the camera lens by snapping on the adaptor ring to be screwed onto the lens. Adaptor ring are available from 46mm to 82mm, corresponding to your lens diameter. The filter holder can be insert with 1 square filter(width 84mm) at one time. The slim profile deisgn, which prevents vignetting, allow it to use with wide angle lens