So Wayne,

You understand now that even though you changed the hubs, originally there were three "lines" going to the caliper vicinity, the brake line (hose), vaccuum line (hose), and ABS sensor (wires). As expensive as ABS parts are NAPA is not including that, so they are including the vaccuum line which you don't need anymore.

I don't know why they include it with a brake line. And the link does work, just choose to shop on-line.