Drill and assemble your pens perfectly with flush fittings and a smoothly-operating mechanism! This dual-purpose jig takes care of both prep work and assembly. It holds your blank firmly in position for drilling, creating a precise, perfectly centered hole the entire length of the pen. Later, it smoothly presses your parts together without any bowing or misalignment. Notched jaws automatically center the blank for drilling, while two countersunk holes center the parts during assembly. Large clamping wheel provides slow, controlled pressure so you’ll never crack a casing again.