Parker Vacumatic Bushing Tap

BOTTOMING TAP FOR CHASING THE THREADS THAT THE CLIPSCREWS or BUSHINGS ENTER WHEN BEING SCREWED INTO THE BLIND HOLE ON TOP OF THE CAP OR THE BOTTOM OF THE BLIND CAP ON A PARKER VAC.  This will make it easier and smoother to get bushings and fat clip screws into your Vacumatic cap or blind cap, especially if you're screwing in a clipscrew without a bushing and thus no slot to put a wrench or a screw driver into.