Not all key blanks are suitable for punching

512MB of free (available) RAM

making rekeying impractical or impossible

heavy-duty semi-automatic key machine

HPC Mortise Cylinder Lock Tap & Die Set (CLTD-5) 1985-Oldsmobile-Ciera Not all key blanks areHPC Mortise Cylinder Lock Tap & Die Set (CLTD 5) When mortise cylinders and lock cases are new they screw together without a problem. However, often times a mortise cylinder is forced out of a lock without loosening the retaining screw. Other times an inexperienced person will force a mortise cylinder into a lock crooked. These actions result in stripping the threads of the cylinder or the lock case itself. The HPC Mortise Cylinder Lock Tap & Die Set