This HandiQuilter oval ruler is for use with any brand mid arm or long arm quilting machine. High quality acrylic 1/4″ inch thick insures safety when used with a hopping foot. Etched lines provide long lasting accuracy when quilting. Oval sizes 4″ x 2.75″, 8″ x 5.5″ & 12″ x 6″. As always if you have any issues with this purchase simply return it in it’s original condition for a refund.