The Sew Steady Universal Sew Straight Guide is designed to work on both our Sew Steady Portable Tables and with our Sew Steady Cabinet Inserts. The Sew Steady Universal Sew Straight Guide is made of 1/8" thick acrylic and it comes with 2 suction cups to secure the guide to the sewing surface. The Sew Steady Universal Sew Straight Guide also comes with a cling-on Centering Ruler to help line up projects with the needle.