Klarus Blue Filter XT11
This Blue filter has been specifically made for the Klarus XT11 tactical flashlight. It screws securely into the front of the torch when the strike bezel has been unscrewed and removed. So there's no way of the filter dropping off and being lost. Attach it to the head of the flashlight for blue light output, which is useful for hunting at night. The blue light makes it easier to see blood, so wounded animals can be tracked at night.