The Jersvimc Mandrel Cutter executes precision cuts for drywall quickly and effortlessly. Its design helps ensure that the punching of the ring with the installed plug leads to flat, clean results every time. Its lightweight, so it's easy to rotate and guide through tight spaces and ceilings while still delivering that reliable construction we need in the Industrial and Scientific world. While this mandrel cutter is excellent in drywall, it does not work effectively with metal..