All of the mechanics I know all say the words "Steer clear of Snap On" when buying tools these days.
They used to be great, they really did, these days, they're rubbish.
My fathers business was originally buying snap on gear (About 9 years ago now) for these special allen key pieces that go on a breaking bar, they were listed as "Unbreakable, with a lifetime guarantee". We used to send them back every month for replacement.
In the end, brand name change (KingChrome), haven't broken one since.
I have "repco" tools personally myself, they have a lifetime guarantee, and I'm about to send back my ratchet, and my extension... The extension is bending, the ratchet has gone "floppy" and no longer sits at 90 degrees.