Plumber's supplies typically include pipes, which are cylindrical tubes used to transport liquids and gases. Pipes are usually made of metal or plastic and come in a variety of sizes and shapes. Plumbers also use fittings, such as elbows, tees, and couplings, to connect pipes together. Other supplies commonly used by plumbers include wrenches, saws, drills, and other tools for cutting and joining pipes. Plumbers may also use adhesives, sealants, and other materials to ensure a watertight connection.