Machinist's Automatic Center Punch

This lightweight aluminum center punch is great for marking a variety of materials, and the unobtrusive design fits comfortably into a pocket or tool belt. The spring-impact operation is adjustable to accommodate both light and heavy markings. This item is a common choice of both machinists and woodworkers.
-Features & Benefits :

Punches, marks, scribes and starts drill,nail or screw holes
One-hand spring impact operation,no hammer needed
Spring tension adjusts for light or heavymarkings
Ball bearing action
Lightweight aluminum body withlong wearing alloy steel parts
Hardened steel point