Description
Female tube joiner, M12 x 1mm thread. Joins two sections of brake tube flared to M12 x 1, or connects a line to any male fitting on that thread, so a run can be extended or a repair spliced in without a full line replacement.
M12 turns up in both 1 and 1.5 pitch, and the two look alike until one of them binds. Check which you have before ordering. Where the line and the port disagree, a thread adaptor is usually the cheaper answer than recutting and reflaring the run.



