#1 all purpose basic ruler. Use to cut strips, borders, shapes and bias pieces. Includes 30°, 45° and 60° angles. Great for cutting angles and multiples of angles and cutting across strata (strips of fabric sewn together with 1⁄4″ seam allowance). Made of strong and durable premium quality acrylic plastic. Unique black and yellow double sight lines for easy viewing when working with light and dark fabrics. Laser cut to within 0.002″ accuracy with a smooth finish. Specially designed for right and left handed use.