Made from a durable, premium quality acrylic plastic and laser cut for a smooth edge that allows for easier, deeper cutting of fabric layers. The patented double line effect is printed in black and yellow which allows the user to see the grid on both dark and light fabrics. Designed for left and right handed user. OmniAngle ruler for your angle cuts. Creates an 18° wedge but a 9°,10°,22-1/2°, 36° or 45° wedge can be created using exactly the same method following the angled lines on the ruler, ruler also marked with inches, eighths, quarters, and halves.