Dynatron Cranker Mechanical Dispenser is a manual dispensing unit that allows for body filler to be dispensed at a controlled rate. No air is required for dispenser to operate.Control the Flow of Body Filler When working with body filler, automotive technicians will soon discover that the Dynatron Cranker Mechanical Dispenser delivers the control that makes a job go smoother. Our handy accessory will dispense filler at a controlled rate, not too fast and not too slow. Controlled dispensing allows technicians to stay focused on the job, rather than be distracted by on-the-job frustrations. Freedom from Air Because the dispenser operates manually, there is no need for air, allowing you to use it anywhere without running an additional airline. Solid, Reliable Construction Sturdy mental construction handles typical body shop conditions. Versatile Design This dispenser works with both 3 and 5 gallon cans of body filler.