The invention is a tool to be struck, or a striking tool,, or alternatively, a cap, that will not suffer metal spall and the attendant dangers of spalling and flying or cutting metal slivers. The sync mark generator generates a second sync mark before the readwrite channel operates to write data on a disk. The magnetic core includes the magnetic body forming the open magnetic path and having the soft magnetic property. In accordance with example embodiments, the method may be performed either at a telephony endpoint such as a VoIP telephone or at a conference bridge. The method further comprises relaxing the portion of the cannula and advancing the cannula until a second preestablished limit of relative displacement between the cannula and the device is reached. A closed front side may connect the first and second side, while an open stern may allow direct access to the pressure applicator, the support element, and the material axle.