Now even easier to use! Template clings to smooth sewing surfaces so it's always in position ready to sew any 45° angle accurately. Never draw another line! All without paper pencils or pins. Save time and money! The Fabric Alignment Key along with the color-coding makes the CPA easy to use. The two basic techniques can be utilized with any of the advanced techniques for making half-square triangles flying geese snow balls miters and binding. 1/4in and 5/8in seam guides are included. Customizable to any sewing set-up.