Starrett Automatic Center Punch
Starrett Automatic Center Punch, Automatic, one hand operation leaves the other hand free to steady the work. Fully adjustable for strength of impact. All working parts are hardened. Mfg: Starrett SPECS: Steel. 3-53/64" (9.7cm) long. .405" (10.3mm) diameter. 1 1/2" oz. (42.5g). Knurled body and adjusting cap. Starrett #18AA.