The 7artisans 77mm True Color VND Camera Lens VND Filter is a high-quality neutral density filter made of B270 optical glass and multi-layer nano film. It features a clear filter color and VND filter effects, designed to fit a 77mm camera lens. With a 1-year manufacturer warranty, this unit is lightweight at 53.8g and has a drop-in mount fitting. Ideal for photographers looking to achieve true color variations in their photos, this filter is a reliable and versatile accessory for any photography equipment collection.