I love my jig! This is a "must be" to tool for any stairmaster.
From the manufacturer site:
The Stair Wizard is the finest stair tread and riser gauge available anywhere that will allow you to install wall-to-wall type treads in half time of traditional methods. The Stair Wizard works by creating an exact template of each tread (or riser), including length, end angles and depth Simply scribe the tread bank along the template outline, or use the Stair Wizard itself as a cutting guide. It automatically allows for and desired tread overhang, and will accommodate stairs up to 14-inches deep and 53-inches wide. Extensions are available. Complete with case.For all types of treads-hardwood, rubber, vinyl, etc.Creates a complete template of each tread and riser then guides you to aPerfect cut--reduces installation time by 40-50%A beautiful easy to use tool. hand crafted out of northern hard maple.Folds up for compact storage, comes with a rugged case.