Item far too small for the flashlights marketed for. Too small as in the outside diameter of this is smaller than than the inside diameter of the advertised flashlights and can even sit inside of the bezel (see pictures) Only reasons this review is neutral is because they gave me a full refund AND I was curious so I tested it and the filter is in fact a functioning infrared filter so if you have a flashlight small enough this can adapt it to an infrared light.