3 Pcs Automatic Center Punch Tool Click HERE for more information! DURABLE MATERIAL: The center punch tip is made of high speed steel that holds up to strong impact, wear resisting and rust proof to prolong the punch life, high speed steel hardness: HRC58° ~ 60°. MULTI-USE: Automatic center hole punch is suitable for a variety of tasks, such as mark on materials, car emergency tools, alternative emergency hammer, and Iron plate positioning, wood positioning, wall positioning, etc. DESIGN: The pocket automatic center punch body has deeply knurled finger grip to achieve easy handling and better control; the non-pinch comfortable cap makes a good cushion for your palm against spring impact.