Breaker Bar pickle

Yep, the 1/2" drive bar from Halfords is fine - don't buy anything cheaper though as can be quite dangerous!

Socket you need -

http://www.halfords.com/webapp/wcs/..._productId_166133_langId_-1_categoryId_165469

They do do a 30mm 3/4" drive socket but it's 12pt and part of this kit...

http://www.halfords.com/webapp/wcs/..._productId_525173_langId_-1_categoryId_165572

Not a bad price but really 3/4" stuff is a bit overkill for what we work on! You're talking trucks and 4x4's for that