The case feed shuttle back enables you to lock the case feed shuttle back to prevent cases from feeding into the shell plate when cycling the press. Great for clearing the shell plate, maintenance, setup, or any time you don't want cases to feed. Easy installation. Just screw with the two original bolts. Built-in hinge allows for simple operation. Cycle machine to down position and enable stop switch. Built-in bulge that secures switch in ON position. Made from stainless steel.