Save money by molding your own round balls. The Lee round ball molds have a double cavity for volume casting. Mold body is crafted from aluminum with steel sprue cutters and wooden handles. Instruction sheet is included. Made in USA. Available: .311, .375, .440, .451, .454, .457, .490, .495, .530 diameter. WARNING: This product contains lead, a chemical known to the state of California to cause cancer and birth defects and other reproductive harm.Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Molds.