Description: Adjustable Neutral Density Professional Photography Filter Set (ND2, ND4, ND8). This lens filter kit is specifically designed for the GoPro HERO 4Session\5Session Camera. Reduces the amount of light that passes through the lens. Allows for reduced shutter speeds, and wider apertures in bright light. Superfine matte black frame. Specification: Material: alloy + glass Size: 65*65*2mm/2.56*2.56*0.08inch Package Includes: 1 Piece Adjustable Neutral Density Professional Photography Filter