The
best tools made. Mostly
general-purpose mechanical tools for your auto shop, not so much
woodworking. Not
power tools.
There's not much to say about Snap-on Tools except, again, they are the best. They used to be only available from the Snap-on tool truck but they have stores now, too.
They're probably most famous for their absolute lifetime guarantee - if a tool with the Snap-on name on it ever breaks, they'll fix it or replace it. For free. Forever. If I found a broken Snap-on metric tap & die set lying in the gutter, I could bring it to a Snap-on dealer and they'd give me a new one, or fix the old one. No questions asked.
Snap-on Tools are pretty expensive. Even more than Sears Craftsman tools, which are also pretty good.