Crayola-Melt 'n Mold Factory Kit: TMNT Color Bunga. Mix, melt, and mold crayon colors to make cool Teenage Mutant Ninja Turtle sewer covers! Kit must be used with Melt 'n Mold base unit (sold separately). Make up to four sewer covers! This 7-1/2x6-1/2x3/4 inch package contains twelve crayons and one sewer cover mold. Recommended for ages 3 and up. Conforms to ASTM D4236. Non-toxic. WARNING: Choking Hazard- small parts. Not recommended for children under 3 years. Imported.