【Neutral Density Filter Set】 This kit includes four neutral density filters (ND2/ND4/ND8/ND20), a lens cleaning pen, a cleaning cloth, and a filter pouch. For long exposure photography and a shallow depth of field, these filters can slow down the shutter speed, create dramatic motion blur, and avoid overexposure when using a wide aperture 【Premium Construction】 The optical glass ensures sharp images and high color fidelity. The CNC aluminum alloy frames with black anodized treatment are lightweight and durable 【Clean Filters & Lenses Easily】 A extendible lens cleaning pen with two tips helps you easily remove dust, debris, fingerprints, and smudges from filters and lenses without scratches 【Safe & Organized Storage】 The filter pouch features individual mesh pockets for every filter to keep filters safe and portable. Touch fasteners seal the filter pouch for ultimate protection 【For ⌀77mm Camera Lenses】 Compatible with any camera lens with a ⌀77mm filter size. The slim frame avoids vignetting when shooting with a wide angle lens. The filter size is marked on the front or side of your lens, next to a “ø” (diameter) symbol