These Nitecore filters are designed to fit over top of most flashlights with a 65mm 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 65mm 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. This filter is compatible with the Nitecore P30i, or flashlights with a head diameter of 65mm. These Nitecore filters are available in 2 different colors: red or green.