These two molds go together. One is scalloped and makes an approximate 3.5-4 oz bar of soap. (48 oz) The other one makes 4-4.5 oz bars (54 oz). You use the metal stand to hold them up and you pour your soap in the top down each row. You don’t have to line these. These are made from 1/8" thick polypropylene, a tough and rugged material that is stress, impact, chemical and solvent resistant with a high lubricity and low bonding ability that makes it perfect to withstand the rigors of hard use while easily unmolding beautiful bars of hand crafted soap! the instruction manual is included with these.