The tool measures 3.25" X 2.5". This tool is inspired by a gorgeous antique quilt that we purchased from a local quilter. It does involve a bit of simple paper piecing, but when you put four of them together you can make the periwinkle block so easy with no Y seams. You could also use this tool to make a mini version of the wacky web quilt. It would also work well for pot holders, table runners, or wall hangings! Cute and fun!