Comments: The Nitecore 40mm Blue Flashlight Filter is a flashlight accessory that will fit any light with a 40mm bezel diameter. The filter lens is made of glass and is coated on both sides for enhanced light transmission and heat tolerance. An impact-resistant rubber frame makes this filter durable; it also has an integrated lanyard attachment hole that offers convenient carrying. Since its lens can be removed, this filter can also be used to protect the flashlight bezel.
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