I am getting ready to plumb my 32 for brakes and I have disc both frnt & rear. I have a lot of AN fittings, Stainless fittings and all the necessary hardware and tools. My Hydralic flareing tool really is a time saver. My question is how can you tell 45 Degree from 37 degree. Are all AN fittings 37 or 45. or are they both? I need a tool to show me the diferarnce, I only have equipment to do 45. Thanks guys in advance