Has anyone bought a master cylinder lately? Instead of the usual plastic bleeder plugs with hose to route to the master cylinder bowls, my master cylinder came with these plugs with a stepped thread design. Seems like, for instance, the first portion of thread is 3/8" and then steps up to a 1/2" diameter. Not sure what the exact size is for my M/C, but you get the idea. It doesn't use a return hose or anything, just a plug. The instructions that came with it say they are a "new and improved way of bench bleeding". I just don't see how these darn things work. How is the air supposed to escape? I'm planning on buying a short section of steel line and bending it, but thought i would ask others that have seen these before if they know how they work.