Where can i buy red lens caps for any size?

[imjerv]

Anyone know where i can buy lens filter caps in any size like this?

WH

 

[leukos]

Over the years, for flashlights that did not offer colored lenses, I have used Butler Creek Blizzard flip up scope covers and modified them with colored film or diffusion tape to make what I wanted. They have size ranges that will fit most flashlight bezels.