Make quick, precise holes with the General Tools 79 Mini Heavy-duty Automatic Center Punch. With its one-handed spring impact operation, you won't need a hammer to punch, mark, scribe, and start drill, nail or screw holes. This all-steel body features a knurled finger grip and a rust-resistant black oxide finish for long-lasting use. It also has adjustable spring tension for light or heavy strokes and marking. Get the job done right with the reliable #79 Mini Heavy-duty Automatic Center Punch. 

Replaceable hardened steel point (#79P or #79P/2). Point diameter: 0.055 in. (1.4mm)