Product Name:ND4,ND8,ND16,ND32,ND64;ND4-PL,ND8-PL,ND16-PL,ND32-PL,ND64-PL
Size:34mm
Frame material:Aluminum,Matte black(Other colours are also available)
Coating Process:Both Side Low reflection ND coating,Water-proff,Oil-proof
Glass material:Schot t glass
PRINTING:Laser engraving