Materials are the thing that differs one from another. And in Khalil mamoon hookahs, two types of materials are used. These materials are brass and stainless steel. So, These are the primary two materials. They are used in the kM hookahs. Still, there are other KM hookahs available where the company makes them with the help of three metals or tri-metal to maintain the Egyptian tradition. They provide a setup instructions guide to help customers take all these benefits.