Allows easier idle adjustments with 10-32 adjusting screws.  These billet aluminum throttle shaft stops are machined as a complementary pair. A true left and right shaft stop, which places all screws of the same type, in the same direction, from side to side. All adjusting screws ride in steel inserts instead of aluminum, for added strength. 10-32 threads allow for finer adjustment.  Available in Right and Left Hand.