General Tools & Instruments 806 Jiffy Centering Punch
This tool centers your marking hardware holes.  Use the jiffy centering punch for quickly starting screw holes when attaching countersunk hardware such as hinges, hasps, hangers, and drawer pulls.  Countersunk end ensures starting hole is centered in hardware screw hole.  It has a hardened steel pin and is spring loaded.  The plated body is 2-1/2" x 3/8".