The Reverse-A-Rule Straight Template enables you to create straight lines and stitch-in-the-ditch when free motion quilting on mid to longarm quilting machines. To ensure accuracy while quilting, the ruler is a different color on each side. Use the dark side when sewing on light colored fabrics and the lighter side when sewing dark fabrics. Overall dimensions are 10.75" x 2.5". Made in the USA.