The Kase Magnetic Lens Hood and 82mm Adaptor are designed for use with standard step-up rings or can be screwed directly onto your lens if the filter thread matches the 82mm lens hood size. This magnetic lens hood and adapter set is specifically designed to block light and avoid light leakages. It's a simple set-up and easy to use. Screw the adapter ring onto your lens, magnetically attach your filter to the adapter ring, then magnetically attach the lens hood to the filter. The lens hood is made from lightweight but durable rubber for easy transport.