Use this Square on Square Trim Tool designed by Jean Ann Wright for Creative Grids® to create 4in and 8in square on square blocks. The Snail’s Trail blocks are now easier than ever. Simply change the colors of the triangles to create a variety of designs. · Made in the USA with high quality acrylic and precision measurements ensuring accuracy for your quilting, sewing, patchwork, and crafting projects. · Creative Grids® exclusive non-slip grip allows you to easily slide the trim tool over the fabric until positioned correctly. Then, when slight pressure is applied, the grip holds the trim tool in place, eliminating slipping while you cut. · Easy to read black and white markings. · Cutting measurements are printed right on the tool. · Trim each round as triangles are add by placing the appropriate centering square on the ruler over the center square of the block to trim two sides. Rotate the tool and the block to trim the last two sides. · Comes with fully illustrated step by step instructions. · Scan the QR Code printed on the tool to view a how-to video of these features and to see the projects that can be made with this trim tool. Total Size: 8-1/2in x 8-1/2in Creative Grids® Rulers are made in the USA and sold through independent quilt shops as well as select online retailers. Creative Grids® products have a MAP/IMAP (Minimum Advertised Price/Internet Minimum Advertised Price) Policy. Please do not advertise them for less than the suggested retail price.