... and glass 2.Optical glasses from Japan 3.No pressing ring design Massa Super Slim UV Filter ... ring and glass 2.Optical glasses from Japan3.No pressing ring design*Why must be Massa Slim ... thickness1.1mmDiameter (MM)49,52,55,58,62,67,72,74,77,82,86Multi- CoatingNo coatingTop level ... Chen Shenzhen Massa Photography Equipment Co., Ltd Office Add: Room1920, Gelin Wangyuan,NO.96 Yannan Road, Futian District, ...