Nitecore 40mm Filters Color Options for Every Purpose These Nitecore filters are designed to fit over top of most flashlights with a 40mm bezel. The flashlight accessories give users the ability to alter a light's output to enhance its overall abilities. Fitted with a rubber frame, the 40mm flashlight filters are extremely durable and are resistant to both hot and cold temperatures, which makes them ideal for rigorous outdoor use. The lens itself is constructed from glass and features a coating on both sides for enhanced light transmission and added protection. Additionally, the lens may be removed to allow users to transform the attachment into a protective cover for his or her light's bezel. These Nitecore 40mm filters are available in 4 different colors: red, green, blue a white diffuser. Red Filter A red lens for flashlights gives users the ability to see at nighttime, without damaging their night vision. This is especially useful when reading maps. Blue Filter Blue filters make red colors stand out and are therefore designed specifically for tracking the blood trail of an injured animal. Green Filter A green filter, on the other hand, is perfect for hunters as the light does not disturb game. The green lens also have a brighter output than red filtering, so users can see more. White Diffuser The white diffuser lens converts a focused beam to a wide-angle beam that is ideal for close-up applications, including reading and photography.
