HOW TO USE: The first number points to the lens thread size and the second number is the filter size; Step up rings provide a way to fit a larger diameter filter or accessory onto a smaller lens. Step down rings work in the exact same way but instead provide a way to attach smaller accessories and filters to larger lenses; Can be screwed onto the front of the lens easily with great tightness; Very simple to set up
Made of high quality aviation aluminum alloy.
Extremely solid and lightweight.Specifically designed for your camera for a tight and secure fit.