Bottle stopper drill and tap set. Mount your bottle stopper blank onto your chuck and with this system, drill a blank then tap the thread that will mount your blank securely onto the chuck. Get a better grip with no more hand threading or spinning blanks! The set includes a 5/16" drill bit, a T handle and a centering tap to thread a 3/8" thread into your blank. Works great on wood, acrylic or any other machineable material.
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