Inside size of the mold is 5/8" X 1/4" X 1/4" deep. Machined graphite ingot with a steeper wall taper than our normal molds for better metal removal. This Mold is great for making old style loaf KitKat bars. The weight of each bar depends on what metal your working with and how full you fill each cavity. Full to the top plus a bit more will give you a apx 1/4 Troy ounce Gold Bar. Silver will be like 1/8 oz. Silver dime shown in the pic is not included.