I always liked the look of Andrew Whites 79 Series with the rear mud flaps so I modeled these after his design, although his are permanently mounted. I wanted to be able to remove mine as needed. These are removable in less than a minute each if needed. All that's needed is a 13mm wrench. I originally ordered a set of Aries Removable Mudflaps but as it turned out they are no longer in production so I made my own version.