Setting lash normally takes three hands: one on the feeler gauge, one holding the lock nut and one on the adjuster. This set solves that by nesting a T-handle through the middle of the wrench, so the lock nut and the adjusting screw are both under one hand and the other stays free for the feeler gauge.

Proform 66779 Valve Lash Wrench Set Features:

• Wrench seats over the rocker arm lock nut.
• T-handle drops down through the hole in the wrench to reach the adjuster.
• Lets one hand hold the lock nut and turn the adjuster at the same time.
• Roughly halves valve adjustment time.
• Check the wrench size suits your rocker lock nuts before ordering.
• Sold as a set.