Retro Treads are sometimes called remodel treads, cap treads, or rabbited treads. What's unique about these treads is the ease of installation. If your staircase already has treads installed (usually 2 x 12 pine) then you will not need to remove those in order to install these retro treads. Therefore these are DIY friendly stair treads. These retro treads have a 1/2" thick body, with a 1" thick bullnose on the front, creating a 1/2" reveal with which to slide over a riser of your choice.