The Binding Tool is a must have tool for every quilter. When you finish the last seam of the binding only an angle seam will work to reduce the bulk of this last step. The Binding Tool makes a perfect ending every time. Two measurements and two cuts and you're on your way to a great finish. The original Binding Tool is for large project and the Mini Binding Tools is for miniatures and things like pot holders that are small and don't have a 12" space to work with.