Hi, I'm Kim, the inventor of the Double Diamond Ruler! This notion is really taking off! I hope you all try it. Just one correction, the rulers in the package make 1-1/2" and 3-1/2" wide diamonds (not 4-1/2"). The website www.Bright-Quilting-Notions.com has lots of ideas how to use double diamonds from quilt borders to clothing to home dec. Check it out!