Activ-Low Fire Clay is a blend of several natural clays and minerals that produces a smooth white talc body with good plasticity. This earthenware clay is a light gray color when wet yet fires to white. It is great for hand modeling, hand building, slab rolling and can be thrown on a potter's wheel. This clay is excellent for all skill levels from beginners to professionals, and is non-toxic certified. This earthenware clay fires in a kiln to maturity at cone 06 and bisque fires at cone 04. Each box includes 50 lbs.