The Stair Wizard Gauge creates a complete template of each stair tread and riser—then guides you to a perfect cut in one third to one half less time. Can be used on vinyl, rubber and hardwood treads with stair widths from 31-1/2″ to 53″, or up to 81″, with the addition of one set of the No. PL200A Extensions. Adjustable stops automatically correct for tread overhang, or nosing thickness, and the locking angled braces give a solid, reliable set. The gauge folds up for easy transport and stores in a clear plastic 3-1/2″ diameter x 32″ long tube with friction fit end caps. Handcrafted of African Mahogany hardwood in the U.S.A. Weighs 3-1/2 lbs.