Retro Treads are solid hardwood stair tread caps designed to cover existing treads that were originally carpeted. They come with the front nosing attached; its 1 1/4-inch depth is meant to completely cover the structural treads beneath. Return nosings are cut to length and glued in place by the installer. The caps come in red and white oak, maple, hickory, poplar, and Brazilian cherry; red oak treads cost $29 each and return nosings $6. Young, 800/545-6595, youngmanufacturing.com.