100 oz Troy Ounce Loaf Cast Iron Ingot Mold for Melting Casting Refining Gold Silver Copper Aluminum Brass Precious Metals Made of cast iron Holds up to 100 troy ounces of gold Requires the use of a releasing agent - we recommend the Metallon Spray (CAST-0027) Designed with a slight taper for easy ingot removal Durable handle for easy to us