Features 1、WEAR RESISTANT AND DURABLE: Center punch is made of good quality material, wear resistant and rust proof, prolong the life of the punch 2、GOOD GRIP: Non slip knurled texture provides extra grip for comfortable and accurate handling, and a hooded rear for a stronger grip 3、WIDE USES: Can be used as an emergency tool for automobiles, furniture installation, machine maintenance, replacement emergency hammer, etc., suitable for positioning steel, aluminum, iron, PVC, steel, wall, wood, etc. 4、EXCELLENT PERFORMANCE: High speed steel material has high strength, high compression resistance, high wear resistance, and high tempering stability and hot hardness 5、PERFECT REPLACEMENT: Shank diameter is 12mm, punch diameter for 4mm, center punch total length is 5in, 7pcs are enough for you to replace and use Specification Item Type: Center Punch Material: High speed steel Shank Diameter: Approx. 12mm / 0.47in Punch Diameter: Approx. 4mm / 0.16in Center Punch Overall Length: 5in Package List 4 x Center Punch