4-Pc Astro Tools 78004 1/2" Drive Goliath High Torque-Saver Impact Extension Bar Set (2.5" -15")

The first impact extensions designed for High-Torque impact wrenches
Goliath extensions deliver 15-25% more torque to the fastener than every other 1/2" extension that came before them
Larger shaft size takes up minimal additional space, around 2mm extra in each direction
Precision heat treated Cro-Mo, simple lifetime warranty process. Just email Astro an image of the damaged tool and have a replacement shipped!