Invented by a quilter, for quilters. The Curve Master Presser Foot is a new sewing technology that allows us to sew any 1/4" or 5/8" curved seam without pinning! It also does perfect straight seams. It adapts to fit most** any home sewing machine regardless of brand or age of the machine . Imagine sewing any CURVE with no pinning! Imagine perfect, consistent 1/4" seams, both STRAIGHT and CURVED. The Curve Master Presser Foot does that and more! **BERNINA users note: ALL Berninas will accept the Curve Master. A special metal Bernina shank adapter is required. You would have this if you have ever used a generic, or non-Bernina foot on your machine, or if you have the Bernina ruffler attachment. If you need one, it is available on the Just Curves website or from your Bernina dealer.