I hesitated on purchasing this in this time of cheap knockoffs that can’t compete with the real thing. But, this is the real deal. I have worked both 3/16” and1/4” brake lines with the required double bubble flare, both on and off the vehicles. Couldn’t be happier. They are precise, and don’t leak when assembled. Time will tell about how long it performs, but it comes with extra seal kit if required.
Don’t screw around with brake lines, this will keep you safe.