Rubber-like, vinyl Soft-Kut material makes block printing safe and easy. Won't skid away from students, so it doesn't require a bench hook. Cuts easily with a craft knife with almost no pressure or force. Great for use with standard lino cutters in a Speedball penholder. Use both sides to double the cutting surface. Block is approximately 1/4" thick. Kit has 24, 4x6 Soft-Kut printing blocks, 12 cutting handles, four U-shaped and eight V-shaped cutters, four 4" hard rubber brayers, an inking pad and 1 lb. of Handy Art black printmaking ink. Soft-Kut is latex-free. Handy Art ink is AP Seal, non-toxic.