The Stepping Adapter Ring Kit includes: 10 Pieces Step-up Adapter Ring Set (26-30mm, 30-37mm, 37-43mm, 43-52mm, 52-55mm, 55-62mm, 62-67mm, 67-72mm, 72-77mm, 77-82mm) + 10 Pieces Step-down Adapter Ring Set (82-77mm, 77-72mm, 72-67mm, 67-62mm, 62-55mm, 55-52mm, 52-43mm, 43-37mm, 37-30mm, 30-26mm). Made from premium-grade aluminum. Anodized matte finish to compliment your camera. Fit any lens with the same filter thread; manual or autofocus, digital or film. Convert the thread size of your lens to the thread size of any other accessory (such as filters, hoods, flashes and lens converters).