Generic 9pcs Step Up Filter Adapter RingKit for Nikon Canon Sony DSLR Cameras - Include (37-49, 49-52, 52-55, 55-58, 58-62, 62-67,67-72, 72-77, 77-82mm ) Kit Includes:9pcs Step Up Filter Adapter Ring Kit - Include (37-49, 49-52, 52-55, 55-58, 58-62, 62-67,67-72, 72-77, 77-82mm ) Converts the thread size of your lens to the thread size of any other accessory (such as filters, hoods, flashes and lens converters) Manufactured by a professional team for photography enthusiasts to provide a very exciting experience. 100% Satisfaction Guaranteed. Fits any lens with the same filter thread; manual or autofocus, digital or film. The first number is always the lens thread size, the second number is the filter size of the accessory. If the first number is smaller, it's a step-up.