Wrenches, sockets, ratchets, allens, all basic hand tools made out of a hunk o' metal? Harbor Freight tools are fine. I've rebuilt VW engines with them. (Unless you use hand tools to make your money, in which case buy the best ones you can get.)

That said, there are parts of the bicycle that require bicycle-specific tools. And I do mean require. As in, "there are no substitute tools that will work. Don't even bother trying. Buy the tools or buy new parts... and the tools."

--Shannon