Klarus FT12 Red - Green - Blue Filter XT15 - XT12GT
Price is for a single filterHigh elastic silicone frame gives a good protect to the glass, making the filter fit many flashlight models in almost any environment.
Red filter- Used for emergencies, caution, traffic signal and Hunting to not spook game. Great for penetrating fog or smoke. Does not disrupt night vision.
Green filter-Used for hunting and hiking. Green is also very popular for night time map reading and covert operations because it does not disrupt night vision.
Blue filter- Used for night fishing, tracking wounded game, and close reading.
FT12:Can be compatible with around 45mm bezel(like XT12GT/XT15).