I've seen two different bleeder sizes listed for the stock Slave; M6 x 1.0 and 1/4 x 28. Either size should be available at most local parts stores. I ordered a Speed Bleeder for mine from Ebay, it was part# SB6100, which is M6 X 1.0. It makes bleeding the slave yourself so easy!
BTW, if you buy a Speed Bleeder and ever break one off you can send it to them and they will remove the old one, install a new one, and mail it back to you for free. I've done this myself and it is indeed true.
If you feel like fixing a broken Speed Bleeder yourself here's the procedure (scroll down their page): CLICK LINK HERE
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