Description: No hammer required, you simply push down on the centre punch with your hand, and the strong spring action will strike the head, allowing you to get the job done effortlessly. Providing a more sharp tip, the center punch allows for a precise starting point, improving your work efficiency. Using premium stainless steel material, the center punch is durable and has high hardness. Center punch of S size is 128mm long, 12mm wide and has tip diameter of 4mm. M size is 155mm long, 15mm wide and has tip diameter of 6mm. It is suitable for punching steel plate, glass, wood, plastic, and other materials. Also it can be used to break windows in emergency. Item Name: Center Punch Material: Stainless Steel Color: Silver Black Features: Spring Loaded, Easy Operation, High Hardness Size Details: S: Size: 128mm x 12mm/5.04" x 0.47", Tip Diameter: 4mm/0.16" (Approx.) M: Size: 155mm x 15mm/6.1" x 0.59", Tip Diameter: 6mm/0.24" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Center Punch