Decreases the minimum focusing distance of virtually any lens to "Macro Lens" Includes +1, +2, +4, +10 diopter filters & ballistic nylon filter wallet "Dual Thread" design makes it easy to combine close up filters to create Extreme Macro effect and/or add other optics eg; Polarizing, UV, Warming filters Premium grade optical glass ensures no loss of detail Durable ballistic nylon filter wallet included