Enderle injector butterfly shaft. This shaft is made from durable steel and has been machined to accept the three butterfly's. Includes new bolts and lock washers. Each end of the shaft has serrations for the throttle stops and linkage arms.
Bug and early Bird shafts diameter is .312" and later Bird and Buzzard injector butterfly shafts are .437" in diameter.
Enderle Little Ugly injectors use the .437" Bird injector butterfly shaft.