Use this non-slip ruler to create row by row quilts. It's marked for left and right handed use. This pack contains one 9.5in x 24in fat quarter ruler that is perfect for use with rotary cutters. Omnigrip non-slip neon rulers are made especially for quilting, sewing and crafting projects. Make 9in x 9in blocks with 1/2in seam allowances. Highlighted features for use on light and dark fabrics.