You"ll have all the right tools to get any job done right with the Alvin Self Healing Cutting Mat Deluxe Kit. This professional-grade mat is green on one side and black on the other. It features .5-inch grid lines, and guide lines for 45 and 60 degree angles. All four edges are fully numbered and graduated with 1/8-inch has marks that extend beyond the zero base line. This kit includes an art knife with spare blades, 7-inch scissors, a circle cutter with spare blades, and a rotary cutter. About Alvin and Co. Alvin and Company has been a leading source of drafting and drawing supplies since 1950, and it continues to meet the evolving needs of its customers with value and innovation. The ever-expanding range of Alvin products includes papercraft, fine arts, hobby and craft, drafting supplies, drafting tables, and more. Alvin serves today"s needs - and tomorrow"s, too - for graphic arts, drafting, and fine arts products. Dedicated to the pursuit of excellence in all aspects of its business, Alvin relies on its employees to create and develop opportunities that set it apart from the competition. * Self healing surface always stays smooth * Mat made of 3mm thick vinyl composite * Printed grid lines and guides for 45 and 60 degree angles * Art knife, scissors, circle cutter and rotary cutter * Mat measures 12L x 18W inches