If you only need the 8mm, then I'd recommend a name brand and buy just that one. HF is generally not good quality so buying a set there or the one you need from Craftsman or Matco should cost about the same. This way you'll end up with a known quality tool.

__________________
There is a very fine line between "hobby" and "mental illness."
FrankenBenz: '87 560SEC with an '02 cammed LS6 and custom 4L60E.
Bling: '87 560SEC, ported/polished, lowered
Lisa: '87 560SEL, lowered