Neewer Graduated Filter Kit: (3) Graduated ND Filters(G.ND2,G.ND4,G.ND8)+(3) Graduated Color Filters(G.Grey,G.Orange,G.Blue)+(9) Metal Adapter Rings+(1) Square Filter Holder+(1) Filter Carry Pouch Kit includes:(3)Graduated ND Filter Set(G.ND2, G.ND4, G.N8) + (3)Graduated Color Filter Set(Grey,Orange,Blue) + (9)Metal Adapter Rings(49mm, 52mm, 55mm, 58mm, 62mm, 67mm, 72mm, 77mm, 82mm) + (1)Square Filter Holder + (1)Filter Carrying Pouch. The kit is great for portraiture and outdoor scenes. The graduated filters 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 49-82mm adapter rings are made of high quality anodized black aluminum(metal). The square filter holder allows for creative use of light correction or special effects.