Description: Backpack seam allowance patch ruler for making quilted zigzags and dotted lines Helps create your own unique shapes and ensures your designs look beautiful and professional Easy to use, just snap it into place with the feet installed correctly and follow the template for a fantastic mosaic pattern Perfect for beginners or pros, lets you make beautiful bags in a few hours Made of PVC, very strong and durable, a must for DIY sewing Specification: Color: clear Material: PVC Size(LxW): Approx. S: 13.1x8.5cm/5.16x3.35inch M: 16x10.4cm/6.30x4.09inch L: 20.4x13.2cm/8.03x5.20inch Package Includes: 1 Piece Quilting Ruler Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping