The Lumax Diaphragm Chemical Hand Pump, No. LX-1339, is a corrosion resistant diaphragm hand pump made from polypropylene and stainless steel. This pump is designed for use when compressed air and power is not easily available. This pump transfers mild chemicals, mild acidic solutions and water based media. The pump's handle is lockable, and the pump comes with a discharge nozzle, 15' flex hose and the telescoping tube assembly that fits 15 to 55 gallon drums and tanks with a 2" bung opening.