I use a breaker bar. Specifically this one:
http://www.harborfreight.com/cpi/cta...emnumber=30395
1/2" Drive 25" Breaker Bar
Get the extra torque you need to break loose stubborn nuts and bolts with this breaker bar
Strong chrome vanadium steel construction gives you the edge on tough jobs
Drive swivels 180° for the best angle on the work
Shipping weight: 3 lbs.
ITEM 30395-0VGA $12.99
Except I got it for $10 on sale.