Creative Grids 60 Degree Equilateral Triangle 12.5" / for Up To 12" Finished Size Quilting Ruler Template [CGRT12560] Features easy to read black and white markings. A 1/4 inch dashed line is printed on each side of the center vertical line so you can cut 30 degree triangles that include the seam allowance. Exclusive gripper holds the fabric in place while cutting, eliminating slipping and miss-cuts! Comes with fully illustrated step by step instructions or scan the QR Code printed on the ruler to view a video demonstration of these features. Made in the USA