The Creative Grids Non-Slip Multi Size Triangle 45° and 90° Quilting Ruler CGRMS4590 is a high-quality quilting tool made of acrylic material, featuring a non-slip embedded gripper for secure use during rotary cutting for quilting and patchwork projects. This ruler is designed by Creative Grids in the United States, with dimensions of 9 1/2" in length and 6 1/4" in width, providing accurate and precise cuts for your quilting projects. With its multi-size triangle shapes, this ruler offers versatility and convenience for quilters of all skill levels.