The oscillating hilt is a modification for any straight-blade weapon from a dagger to a greatsword. The blade is removed from its original hilt and placed into a new hilt crafted by tinkers. When a catch in the grip is depressed, a small phlogiston engine built into the hilt's pommel spins the sword's blade at a high velocity, granting the user an increased chance to disarm the opponent. However, as the mechanisms weaken the overall structure of the sword, it becomes softer.
The blade inside an oscillating hilt can also be sued as a drill.