Nitecore filter Suitable for the flashlight with head of 25.4mm. The Nitecore filter converts the focused high-output beam of a normal Nitecore flashlight into a soft, wide angle, diffused flood beam. It is great for close-up and low-light applications RED FILTER The Red filter is great for penetrating fog and smoke, and ideal for signaling. Red is also ideal when you want to preserve your night vision. The filter is also useful for close range, non-tactical applications. For military operations; a red beam will always light the path ahead without jeopardizing night vision or strategic position. A red beam also perfectly illuminates star maps & lenses without affecting night vision. FEATURES Made from PC2805 high-grade plastic Highly resistant to extreme temperature Toughened ultra-clear glass lens Anti-reflective coating provides heat resistance and maximum light transmittance This bundle includes -Nitecore Red filter NFR25 -EdisonBright Battery Case