The Lee Precision Production Pot IV allows the right amount of lead to enter the mold on every pour. Adjustable thermostat permits keeping a lead at the proper temperature. Dust tight housing extends thermostat life. Lead melt time is less than 20 minutes. The Lee Production Pot IV has 4 inches of clearance, enough to accept both Do-It and Hilts molds. Production pot holds up to 10 pounds of lead.WARNING: Melting and casting lead objects will expose you and others in the area to lead, which is known to the State of California to cause reproductive harm and cancer. For more information, go to www.P65Warnings.ca.gov. See instructions on Reducing Exposure supplied with product.