Super slim and lightweight aluminium frame, maximum reduce impact on light and effectively avoid dark corner for wide-angle shooting. A multi-purpose fine-weather filter Absorbs the ultraviolet rays which often makes outdoor photographs hazy and indistinct. A multi-purpose, fine-weather filter for colour as well as black and white films. Also serves as a permanent lens protector. Made of high-quality optical glass by K&F Concept technology. Brand of K&F Concept manufactured by a professional team,12 Month Manufacturer Warranty,100% Satisfaction Guaranteed. The filters are all double-threaded, so you can stack your lens cap and other accessories as needed. What's in the box 1 x 77mm Ultra Violet Filter 1 x Plastic Case included for storage and transport.