Developed for the Handi Quilter longarm quilting machines, you can use the Handi Quilter ruler with any brand longarm quilting machine. You can also use this ruler on domestic sewing machines with ruler feet that fit 1/4" thick rulers! They are made with precision from high-quality acrylic, chosen for its strength, clarity and durability. Handi Quilter rulers are etched, not printed, to provide long-lasting accuracy when quilting.