Super Slim MRC-UV Filter 67mm Waterproot ,Scrath Resistant Thread/Glass: 4.5mm/1.1mm Germany Tec Coating ... IR Filter: Glass MaterialOptical glass ,High intensityNew Design (Different from General Filter)Super slim designNew working ProcessWithout Pressing RingRing Thicknessthickness ... , Longgang,Rd, Songgang, Bao’an District, Shenzhen, China Waterproof & Scratch Resistant Super slim 67mm MRC-UV Filter