GBM Series - Green on one side black on the other with both sides gridded. Professional quality for all kinds of graphic arts hobbies crafts shop and industrial applications. This durable self-healing reversible cutting mat is 3 millimeters thick. Whether you like to use a rotary blade or a straight utility blade the composite vinyl construction of this mat will be able to handle it. The design allows for a long-lasting non-glare surface that can be cut and slashed constantly without showing marks or cutting lines. Non-stick surface is impervious to abrasions and liquid spills. Printed grid pattern includes guidelines for 45 and 60 degree angles and 0.5 inch grid lines. Find the perfect center on any project with zero centering lines. All 4 edges are fully numbered and graduated with 0.125 inch hash marks that extend beyond the zero base line for convenience. Mat sizes 24 x 36 inches and above include internal horizontal and vertical graduated hash marks. No matter how ambitious your next project is our mats are available in numerous sizes ranging from 3.5 x 5.5 inches all the way up to 48 x 96 inches. ALVIN has been the professional s choice for drafting tools and drawing supplies for over half a century. Since 1950 we have been known for our wide selection of high-quality products at a fair price. Our tools help bridge the gap between ideas and innovations. Note: The actual size of 36x72in is 36.61x72.83in. Proudly Made in Taiwan