Creative Grids 90 Degree Double Strip Quilting Ruler Template CGRDBS90 Use the straight side of this double strip ruler to cut 1-1/2 and 2-1/2 inch strips  or use the pre-cuts that are on the market. Sew these strips together to create a 4-1/2 inch wide strip set. Turn-a-Round the ruler to cut three 90 degree triangles that finish 4 inches. Multiple layers can be cut at one time. Slides easily over fabric until pressure is applied; gripper holds fabric in place while cutting, eliminating miss-cuts Comes with fully illustrated step by step instructions or Scan the QR Code printed on the ruler to view a video demonstration All Creative Grids are Made in the USA