AUTOMATIC CENTER PUNCH HDDelivers a strong spring driven strike when pressed against a surface by pushing down on the end of the handle A precise dimpled starting point will prevent drills and screws from wandering in metal, wood, or plastic Adjust striking force (between 13. 5 and 32 pounds) by rotating the top end of the handle The oversized rubberized handle is very comfortable to use and provides a sure grip for better accuracy S2 steel striking pin and nickel plated