Ten sizes. Many shapes. One tool. The Classic Curves Ruler by Color Girl makes curved piecing quick and easy, even for beginners. This one tool replaces all templates for all your favorite curved shapes and can cut ten sizes. Quick cutting means you get sewing faster! Pieces include seam allowance so they sew together easily with or without pins. If you love making curvy quilts, or want to learn, this tool is a must-have.