Apoxie Sculpt 4 lb. Natural, 2 part modeling compound (A & B) Self-Hardening, 0% Shrinkage & Cracking. Adheres to: Ceramic, Metal, Wood, Stone, Glass, Plastics, Foam, Fiberglass, Polymers, & more! Durable, Permanent and Waterproof. Non-flammable and Sulfur Free. Made in the U.S.A.