Self-healing cutting mat and hobby knife. Handy cutting mat kit includes a 6" x 8" green self healing cutting mat with hobby knife and spare blades. Printed grid pattern includes 1/2" grid with lines for 30, 45, 60 degree angles. One edge graduated with 1/8" around all 4 edges. Great for hobbies, crafts, modeling, more. Alvin #GM0668 self-healing cutting mat and craft knife kit.