CM Designs ruler 6& 12 add-a-quarter plus pink 
CM Designs rulers combine the speed of rotary cutting quilt pieces with the accuracy of using templates 
Use of Faoundation Piecing, and for use with templates. Automatically add 1/4 inch 
It's fast, easy, you can cut multiple layers, and it is Made of recycled plastic 
6& 12add-a-quarter plus pink- set of 2 rulers with specially designed 1/4Lip