... Guangdong China (Mainland)MaterialOptical GlassFilter Ring MaterialaluminumType CPL filter Size:30.5mmColorSilver and blackGlassThickness1.9mmRing Thickness7mmpackagePlastic box 3. Main Feature ... 62,67,72,77,82,86 ND#2/4/8/16/32 filter25,27, 28,30, 34,37, 40.5, ... 43,46,49,52,55,58,62,67,72,77,82,86 Fade ND ( ... ND2-ND8) 25,27, 28,30, 34,37, 40.5, 43,46 ...