The Straight Out of Line ruler creates unique four-patch blocks with the illusion of curves. Ruler markings make it possible to cut squares from 4 – 10 inch squares – and every half-inch in between. The finished size of the pieced blocks is approximately 3/4 inch less than the cut block. It comes with fully illustrated step by step instructions or scan the QR Code printed on the ruler to view a video demonstration. The ruler slides easily over the fabric until pressure is applied. Then, our exclusive gripper holds the fabric in place while cutting, eliminating slipping and miss-cuts! Total Size - 6in x 24in Creative Grids® products are made in the USA and sold in independent quilt shops only.