Easy to pull and release trigger for dispensing two tubes of materials at the same time. The individual components move through static mixers to combine into one. The dispensing rods are hardened for long wear and additional strength for many hours of wear. This strong steel construction gun fits two 300mL cartridges. It has a full grip trigger for less fatigue. Trigger mechanism is powder coated for comfort with a plated area for ease of movements. A popular tool for epoxy materials. Hang hole for easy storage.