Premium materials: tungsten steel. Modern industrial teeth and rescue tools. We dare not rush and easily break 10mm tempered glass. Recommended for homeowners, but we hope you will never use it. Quick use: When you break a window, you must be brave to save yourself. This safety hammer has a sharp tungsten steel hammer tip that easily breaks the window. Concealed steel knife: The seat belt is quickly cut by built-in safety pliers, which are very sharp. In the event of an accident, the seat belt can be quickly cut off to escape. TPE Soft Rubber Holder: Non-slip, no falling, good hand feeling, surface with non-slip line. It is stable, does not peel off at a critical moment, and bold hits are safer. Tip: Automotive glass is a kind of high-strength tempered glass with strong impact resistance. The middle part of the glass is stronger, while the corners are more fragile. You should hit the corners of the glass with a safety hammer.