Description: Heat treated alloy steel point, chrome plated tip. Knurled steel handle for sure grip. Automatically strikes a surface with powerful spring action when pressed. 5 ” overall length with a ½ ” diameter body. Great for punching, screwing holes and starting drilling, screwing or riveting holes. One-hand operation and easy to carry. Specification: Material: Alloy steel Overall length: 130mm / 5" Pole diameter: 12.7mm / 1/2" Package Includes: 1 Piece Automatic Center Punch