Omnigrid R6524 Omni Grid Ruler 6.5X24In, 6-1/2 X 24, Multicolor Made from durable, premium quality acrylic plastic Laser cut smooth edge allows for easier, deeper cutting of fabric layers Black and yellow print allows the user to see the grid on dark and light fabrics Designed for left and right handed users Has 30, 45 and 60 degree angle lines marked for easy alignment of fabric