Dynatron Dispenser Kit is for use with factory-sealed 5 gallon containers of body filler. It uses a built-in piston to force the filler through the dispensing valve at the bottom of the unit. Container of filler not included.The Easy Way to Dispense Filler Dynatron Dispenser Kit makes it easier to get the right amount of automotive body filler for use in car restoration projects. This system makes the job of an automotive technician go more smoothly and reduces waste of body filler materials. How the Air Powered Dispenser Kit Works An air regulator, which is preset as the factory, permits only 10 lbs. (+/- 1lb.) of air pressure into the container to drive the piston. The system must be used with a regulator. Because the filler is dispensed from the bottom of the container, the combined effects of air pressure and gravity enhance the flow of the auto body filler through the dispensing valve. Benefits of Our Automotive Body Filler Dispenser Our dispensing system is easy to operate, prevents filler contamination and offers a simple and trouble-free design. Automotive technicians will appreciate this system because it saves time and effort, produces no mess with the filler and creates less waste requiring disposal.