Speedball Mid-Fire Glazes were formulated in partnership with ceramic artist, Nancy Sowder. This exceptional line consists of 30 glazes that create magical mottling and reduction-like effects when used at Cone 5/6 oxidation. Eye-catching results are possible when used individually or artists can layer colours for even more unique variation and dimensionality. Friendly in application and firing no matter your experience level! All colours are lead-free and certified dinnerware safe.