I never write reviews but this tool deserves one. This thing kicks ass! Perfect flares every single time. I've only used it on copper nickel lines but I dont see why it would have trouble with any other material.q It's easy enough for a toddler to use. It might be a little pricey compared to the other types of flaring tools but it's worth every penny. The tool itself is good quality and theres enough space in the case to toss in a small tubing cutter and deburring tool. I would recommend this to anyone doing brake lines.