Flashlight Blue Filter Lens Cap for Olight M20, Jetbeam RRT-2 and more High quality TPU body construction which offers flexibility, durability, chemical and abrasion resistance. Top quality Anti-Reflective coating on BOTH SIDES of the glass lens for optimum light transmission Lanyard loop for convenience Fits Olight M20/M20S, Jetbeam RRT-2 perfectly Also fits other lights with head size (1.39" +- 0.02")