The Straight Line Quilt-Lock is an ingenious device used for ruler quilting and allows you to maintain a perfectly straight line... but wait, there is more! This Straight Line Quilt-Lock is 8" long by 4" wide, made with 1/4" thick acrylic, and has quarter-inch lines running along its length, so you can ensure your quilting lines are spaced perfectly along your quilt. Like our Trim-Lock devices, the Straight Line Quilt-Lock has a stainless steel handle and our specialized webbing material to lock the device in place when it is in use.