Cheap investment that keeps your levers/perches and cables in good shape and lasting a long time. They work on most levers. They won't work on brakes levers that have a wire loop or metal tab style "parking brake" like the ones on old three wheelers (unless you just remove them). They look very clean and nice installed. I really like looking down and seeing the Magura logo!!! Makes me feel like a kid again riding dirt bikes in the 1970's! Warning: don't stare at the Magura logo while you're riding! :)Hahaha!!!