Simply a flairing tool.   There are 3 common types.
Standard flare
Double  flare
Bubble  flare
        Most VW's, since the mid 80's, have use the Bubble flare.
You need to get a good tool.  Cheap one are impossible to
get a good seal.
                                            Eric

patrick wrote:

>I have no idea what to call it but I hope brake flaring tool will suffice. Anyways, I need one that will do the brake lines on my 85 westy. If anybody has an extra one or knows of a good source for a new one please let me know.
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>Thanks in advance,
>Patrick Bishop, appin Ont, 85 westy
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