FAST MOVERS UNDERBODY COATING GUNAn under body coating gun. This gun simply screws onto a standard tin of under body coating material and creates a venturi action that sucks up the material and pushes it through the gun nozzle. An absolute must have for any body shop applying under body material to vehicles, also a great tool for DIY and classic car restorers. Comes complete with plastic extension probe for reaching into those difficult to access areas. Inlet thread size 1/4BSP Operates at 90PSI/6BAR.