Plum Easy Patterns Rulers have been designed especially for use with Plum Easy patterns. Half Hexie- Clear acrylic shape measures 6. 25"x 3", printed with 3 triangles and with a groove on the back that snaps to the edge of the 2. 5" wide fabric strip, for accurate cutting. Designed for making half hexagon cuts and more. Jelly Roll friendly. Instructions on back of package