Ounce pump dispenser offers an easy way to dispense just one ounce of cleaners, waxes, food products, cooking oils, hand soap, shampoo and germicidal detergents. Simply screw onto a 1 gallon jug with a standard opening. You can also use a buttress cap to attach it to a 5 gallon pail with a standard opening. Once the pump is secured to the container, you are ready to dispense. The tube length of the pump dispenser is 10-13/16". The unique threaded body disassembles quickly for sanitary cleaning. The body and head are made of polypropylene for maximum chemical compatibility. Poly Flap Valve (HDPE) is made from FDA and USDA approved materials.