This is shit.
http://m.ebay.ie/itm/Teng-Tools-TTTF...8AAOSwezVWuK2s

This is handy, works a lot of the time, but not on steel, which is a nuisance if you're just replacing part of a line.
http://m.ebay.ie/itm/Brake-Pipe-Flar...AOSw5HJXK4f%7E

This is pretty darn good, sometimes but not always struggles on steel
http://www.uktools.com/flaremaster2-...l-p-11497.html

This is the daddy, awkward but not impossible to use on the car though as it's designed to be vise mounted. That's what I use most.
http://primetools.co.uk/product/syke...r-van-hgv-kit/

Doddle to use, laughs at steel.

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