I find people comparing this to a hydraulic flaring too to be absurd. To compare this to a $5000, 1000 lb floor machine is completely ridiculous so i would not pay much mind to those. The tool works well, plain and simple. If you keep the sliding surface of the wedge well lubed and use an impact wrench you will be flaring tube like nobody's business. If the wedge gets dry the effort required will go up significantly and i do not think you will have much luck trying to use this without a 1/2" impact. For larger flaring jobs just rotate the expander head 90* every now and then and you will have a nice round tube. If you don't rotate it you will have a rounded edge square shape instead of a nice round circle. Once you start using it you will see what i mean. Dont let this dissuade you though, any flaring tool has the same issue once you really start expanding the tool head. Even the $5000 hydraulic machines.