Creative Grids Cat's Cradle Tool XL Quilt Ruler makes a quilt block that looks complicated easy enough. The ruler comes with fully illustrated step by step instructions or scan the QR Code printed on the ruler to view a video demonstration. create 8 different sizes, ranging from 4-1/2" to 8" finished blocks. The cutting requirements for each is printed right on the ruler. You can make different blocks with this tool and arrange them into several patterns. Exclusive gripper holds the fabric in place while cutting, eliminating slipping and miss-cuts. All Creative Grids are made in the USA.