8 Metal Step Down Rings Set Metal ring 52-49mm, 55-52mm, 58-55mm, 62-58mm, 67-62mm, 72-67mm, 77-72mm, 82-77mm Made of anodized black aluminum Step down Ring allows smaller size filter to fit on lens with bigger filter thread size Compatible with Canon Fuji Nikon Olympus Panasonic Pentax Sigma Sony Tamron camera lens