Package contains only a handful [General Use] Self-Centering Punch is the tool you need to create indentations in the work material to help screws and drill bits stay in place and to resist drift from the center of the borehole. This is very convenient when handling delicate work or large buildings. It's also not just for professionals, it's also ideal for drilling jobs around the house [product features] Comes with adjustable screw pressure. Just loosen the screw on the top of the punch. This will allow you to control the impact pressure of the double spring barrel and provide the correct indentation on whatever material you are using. By setting this adjustable pressure, you can create indentations in harder materials and vice versa, releasing pressure from softer materials. [Precision] Each punch is machined to precise specifications so you can create indentations on every job. Features a textured handle for stability and maneuverability. Typically used to mark the center of a point, a small crater guides the tip of the drill bit, preventing damage from slipping or deflection. Suitable for punching positioning holes on steel plates, wooden boards and other materials [Multi - purpose] the automatic positioning punch is suitable for many tasks such as marking materials, emergency tools automatic, positioning of iron plates, positioning of wood, positioning of walls, etc.