To solve the difficult job of adjusting Injector blade openings to set the idle on a running engine. The hollow 3/8 hex ended tube with a handle is long enough to reach the most inaccessible adjustment areas Allen screws and lock nuts. The 5/32 long Allen tee handle driver is slid through the 3/8 nut driver to use as a combination to loosen the lock nut, adjust the idle stop screw, and re-tighten the lock nut, . A 5/32 long Allen tee handle,
with the end machined to 3/32 hex is included for those who use a set screw for idle adjustment to save the added weight of a headed 10-24, or 10-32 Allen head cap screw.