Concept Spurt / Foam Gun 210003 has quality components and high mechanical build quality, which means high thrust ratios. air tightness and reliability. This all-metal gun has a brass nozzle, a teflon-coated needle, and a universal adaptor. It has easy flow control, allowing one-handed use and excellent air-tightness. This gun is suitable for professional use. Teflon allows easy removal of built-up solidified PU foam. For use with polyurethane expanding foam cartridges.