Klarus filters are made to a very high standard using hardened ultra-clear glass (white diffuser) with an anti reflective coating which is specifically designed to work with the high power output of the Klarus XT11 flashlight. The filter body is manufactured from aircraft grade high quality aluminum and is hard anodized for extreme durability making it useable in almost any environment. To use a filter on the XT11, you simply unscrew and remove the steel strike bezel and replace it with the filter. This is the most secure way to use the filter on a XT11. White Diffuser Filter: Makes the flashlightbeam more gentle, hotspot is diffused so the light gives a flood beam. It is suitable for close distance lighting and the uniform beam distribution is very suitable for area lighting.