This set includes 3 new molds, each Cast Iron Steel ingot mold with the slight wall taper for better metal removal. This Mold is great for making Loaf type bars. The weight of each bar depends on what metal your working with and how full you fill the cavity, we list the size based on 24K Gold, Silver or Copper will be about 1/2 the weight. These Steel Molds are not smooth inside the cavity like our Graphite molds are, please see 4 photos below. The Large 200 oz Mold size is Overall length is 9-1/2" and inside size is 1-1/2" deep & at the top its 2-5/16" X 5-1/2"The Medium 80 oz Mold size is Overall length is 8-5/8" and inside size is 1-1/4" deep & at the top its 1-5/8" X 4-3/8" The Small 40 oz Mold size is Overall length is 7-1/8" and inside size is 1-1/4" deep & at the top its 1-1/4" X 3-1/4"