Klean Klay is a non-drying, non-hardening, no-sulfur modeling clay ready for use in a variety of applications. It is tan in color, and has a smooth, firm consistency to retain the shape into which it is molded. It is easily hand-pliable at room temperature making it easy to work with and shape. Klean Klay is suitable for mold-making material for RTV silicone rubber molding. We stock soft, regular and firm consistency in 1/4 lb. sticks. It is packed 4 sticks to a 1 pound pack, 20 sticks to a 5 pound pack and 80 sticks to a 20 pound pack.