Features Broad Utility: The automatic center punch is suitable for positioning on steel, iron, PVC, etc. as well as for furniture installation, machine maintenance and so on. Non Slip Knurl Design: The automatic centre hole punch has non slip knurl design which will provide you with extra grip for comfortable hand feel and more working accuracy. 4pcs in Total: There are 4pcs center punch in the set, and the largely quantity will satisfy your various work requirements. High Speed Steel Material: The cneter punch is made of premium high speed steel material, which is rustproof and very durable for long term using. Easy Carrying: The high speed steel center punch comes with a light weight and a compact size, the convenient storage and carrying will simplify outdoor works. 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 Note: Pay attention to safety protection when using. Package List 4 x Center Punch