Center Punch pencil-sized Pocket Automatic Center Punch is the ultimate choice for machinist, mechanics and inspectors on the go. The hardened steel point and spring impact drive allows for accurate punches in metal and wood, tool can be used to mark, scribe and use it to mark and as a start hole for nailing and screw holes. The pocket clip and protective cap make this tool a convenient and safe travel choice.Specifications:Length: 5-3/4" - 146mmDiameter: 5/16" - 8mmTip Diameter: 1/8" - 3mmWeight: 0.7oz - 20grFeatures:Slim design fits easily into pocket or tool beltIncludes pocket clip and protective cap for pointGreat for punching, marking and staking most metals and woodsLightweight aluminum body with alloy steel internal componentsProvides accurate center punches to prevent drill bits from travelingOne-handed operation no hammer needed!Spring tension impact adjustments for working with lighter materialsSlim Light design tool