High quality pizza and baking stones made here in the United States of America. * These pizza and baking stones are Non-Glazed; lead free, and certified Non-Toxic * 100% Guarantee against thermal shock and cracking during cooking or baking. * Perfect for barbequing pizzas, these stones will not crack when used on the BBQ. * Perfect for fast heating wood pizza and baking ovens, they will not crack during extreme cooking.