Top Features Aluminium build and; Scratch Resistant . Light build . Quick magnetic set up PGYTECH Professional ND-PLiND8/16/32/64jFilter Set PGYTECH has created a fusion of ND and PL filters providing the photographer with prolonged exposure time and eliminating polarized light. This filter combines the best of two worlds and is a powerful tool for aerial photography and content creators. Pinhole Design Two pinhpoles are designed for clear filming indication and; a much better sound recording High definition images The filter uses professional optical glass as its base material which has been ground and polished multiple times to create a low refractive index for professionals to capture colour accurate photos. Water Oil and; Scratch Resistant The filters double sided multi-layered coating repels water and; oil which makes it easy to keep it clean. Thanks to the hard coating material it also makes the filter scratch resistant. Magnetic Quick set up Magnetic connection allows for quick swap of filters. Specification Weight 5g (each filter) . Dimensions 38.3 x 38.3 x 2.2mm . Material Aluminium Optical Glass