This blue filter will complement your NiteCore flashlight (with a 40mm head) nicely but it will fit any flashlight with a head diameter of 40mm. Turn the beam of your flashlight blue with this high quality filter from NiteCore.
Features:
Impact-Resistant Frame Construction
Weight:15g
Material:Plastic
Compatible with NiteCore EA4,MH25,P25 or others 40mm Flashlights