The ETS6000 is a professional quality gun recommended for heavy-duty usage. It has a higher ratio for reduced hand fatigue, This gun is suitable for higher viscosity products. Not only that, but it's environmentally friendly. The sausage packs collapse inside the tool allowing the user to squeeze nearly all the material out of the package so there's very little waste. Of course, this tool adapts to 10oz/300ml/380ml cartridges as well.