EvershopKAZA 67mm CPL Circular Polarizer Glass Filter For Canon Nikon Sony Pentax Sigma Olympus Circular Polarizer filter (CPL Filter) can eliminating the scattered light in the air, as well as the reflected light of the metal, glasses and liquid The thickness of the frame:5.5mm Applicable to any diameter is 67mm SLR cameras. The material of frame: Aluminum alloy The material of glass: Japan's AGC glass