Granite Ware 20-Quart Pressure Canner/Cooker/Steamer: Hard anodized finish so it can be used as a pressure cooker or steamer Steamer insert and jar rack included with this Granite Ware Canner/Steamer Adjustable pressure of 5, 10 and 15 psi to assure good results at any elevation Fail-safe weight control of internal pressure without the need for constantly monitoring and calibrating a pressure gauge U/L certified for safety and canning confidence Aluminum Pressure Cooker Model# F0730-2 The Granite Ware 20-Quart Pressure Cooker is a professional-quality tool, made of heavy-duty anodized aluminum, with stay-cool handles and a strong-lock steel lid. The hard anodized finish is ultra durable and means this can be used as a pressure cooker or steamer without changing the flavor or color of food. An accompanying rack fits down into the pot to keep jars up off the bottom, so that liquid can circulate underneath. In addition to a pop-up pressure indicator and a simple steam release mechanism, pressure canner has controls of internal pressure, which eliminate the need for constant monitoring and calibrating a pressure gauge. The Granite Ware 20-Quart Pressure Cooker pressure dial gauge gives an accurate reading so that pressure can be kept constant during canning.