Neewer Complete ND Filter Kit for Cokin P Series:(3)Full ND Filters(ND2/ND4/ND8)+(3)Graduated ND Filters(G.ND2/G.ND4/G.N8)+(7)Adapter Rings+(1)Filter Holder+(1)Lens Hood+(1)Filter Pouch+(1)Cloth Kit includes:(3)Full ND Filter Set(ND2, ND4, ND8) + (3)Graduated ND Filter Set(G.ND2, G.ND4, G.N8) + (7)Adapter Rings(52mm, 55mm, 58mm, 62mm, 67mm, 72mm, 77mm) + (1)Square Filter Holder + (1)Square Lens Hood + (1)Filter Carrying Pouch + (1)Microfiber Cleaning Cloth. The full ND filters(ND2, ND4, ND8)reduce the amount of light reaching the film without affecting the color. Can be used to enable slower shutter speeds. The graduated ND filters(G.ND2, G.ND4, G.N8)are a MUST for digital users, because the digital sensor unlike film has very low exposure tolerance. Detail will be lost on both low and high light area. To correct this, you need graduated filters to balance it! The 52-77mm adapter rings are made of high quality anodized black aluminum(metal).Compatible with the Cokin P Series Filter Holder. The square filter holder allows for creative use of light correction or special effects. The square lens hood is designed to work with Cokin P Series filter sets.