The set is ND4; It consists of ND8 and ND16 filters.
PolarPro's OsmoAction ND filter is used for more accurate shutter speed management in different lighting conditions. Easy to replace; magnetic design.
16-layer reflector; anti-scratch and anti-oil / water coating.
The filter system is completely drip-proof against precipitation and rain. NDs are generally not suitable for underwater use due to easy fall off.
Lifetime warranty.
