This kind of center punch is designed without cap, you can order according to your need. The center punch is easy to use, aim the heavy head at the locating point, hold the handle and press it in the direction of punches. After the punches are pressed back for a short distance, the spring will pop the punch, producing a pit. You do not need to use hammer and other tools. If you're stuck in the car, also, you can break the window in this center punch, saving time and strength for you. The spring structure works with strong impact force that is suit for steel board, wood board and breaking window. This center punch is made of steel material, which is durable and not easy to be broken, you can use it for a long time without worries. Color: As Shown Material: Metal Package Contents: 5*Spring Loaded Punch Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.