This Flip Cap Lens from Insight Technology is compatible with Insight's HC&HX-120 and HC&HX-150 Flashlights. The Flip Cap Lens attaches to the head of the flashlight, and it can be flipped down to change the color of the light beam. Its anti-roll hex shape stabilizes the light when placed on an incline.

This blue Flip Cap Lens can be used to track wounded game at night - blood stands out distinctly against foliage when viewed under blue light. Because it reduces the flashlight's intensity, it's also useful for close-range non-tactical tasks such as map reading.