Olfa 4 1/2″ Square Frosted Acrylic Ruler (QR-4S)Whether youre into paper crafting or quilting, youll find this square ruler to be indispensable. Paper crafters can use it for half square triangles and small paper piercing. Quilters can use it as a template for 4 squares, baby quilts, and more. Frosted acrylic surface allows black imprinted numbers to be read effortlessly. The frosted surface is non slip for extra stability and safety when cutting. Designed for accuracy and precision with grid lines