Material: AluminumPunches, marks, scribes and starts drill, nail or screw holesOne-hand spring impact operation, no hammer neededEachMaterial: AluminumPunches, marks, scribes and starts drill, nail or screw holesOne-hand spring impact operation, no hammer neededGeneral® Tools Ball Bearing Machinist's Automatic Center Punch, Aluminumhttp://s7d5.scene7.com/is/image/Staples/s0485964_sc7?$std$http://s7d5.scene7.com/is/image/Staples/s0485964_sc7?$thb$http://s7d5.scene7.com/is/image/Staples/s0485964/General-Tools-Ball-Bearing-Machinists-Automatic-Center-Punch-Aluminum/product_580898General® Tools Ball Bearing Machinist's Automatic Center Punch, Aluminum0.00