1. Introduction
Thank you for choosing the Serjur All Metal Safety Hammer. This 3-in-1 emergency escape tool is designed to provide a reliable and efficient means of escape from your vehicle in critical situations. Combining a window breaker, seatbelt cutter, and a durable hammer, it is an essential addition to any car emergency kit. Its robust aluminum alloy construction ensures durability and performance when you need it most.

Figure 1.1: The Serjur All Metal Safety Hammer, a compact and robust emergency tool.
2. Product Overview
The Serjur Safety Hammer is engineered for maximum effectiveness and user safety. Its multi-functional design addresses common challenges faced during vehicle emergencies.
- 3-in-1 Emergency Escape Tool: Integrates a window breaker, seatbelt cutter, and hammer for comprehensive emergency preparedness.
- Heavy-Duty and Reliable: Constructed from high-quality aluminum alloy, ensuring resilience and consistent performance. The sharp hammer head maintains effectiveness even after multiple uses.
- Fireproof and Waterproof: Designed to operate reliably in extreme conditions, unlike plastic alternatives that may fail under high temperatures or underwater.
- Ergonomic and Safe Design: Features a non-slip handle for secure grip and a hidden blade design to prevent accidental injuries during storage and handling.
- Compact and Easy to Store: Its small and lightweight form factor allows for convenient storage in glove compartments or car door pockets.

Figure 2.1: Key components of the Serjur Safety Hammer, including the stainless steel flat hammer, built-in cutting knife, tungsten steel hammer tip, non-slip handle, and aluminum alloy hammer body.
3. Setup
The Serjur Safety Hammer requires minimal setup. Upon unboxing, ensure all components are intact and familiarize yourself with the tool's features. It comes with a protective cap for the window breaker tip and a storage bag.
3.1 Storage
For immediate access during an emergency, store the safety hammer in an easily reachable location within your vehicle. Recommended storage locations include:
- Glove compartment
- Center console
- Car door pocket
Always keep the protective cap on the window breaker tip when not in use to prevent accidental damage or injury. Store the tool in its provided bag to protect it and other items in your vehicle.

Figure 3.1: Recommended storage locations for the Serjur Safety Hammer: door storage compartment, central box, and glove compartment.
4. Operating Instructions
The Serjur Safety Hammer is designed for intuitive use in high-stress situations. Practice handling the tool to ensure familiarity, but never attempt to use the window breaker or seatbelt cutter on actual vehicle components outside of an emergency.
4.1 Using the Seatbelt Cutter
- Locate the built-in cutting knife, which is safely recessed to prevent accidental contact.
- Slide the seatbelt into the cutter's slot.
- Pull the tool firmly across the seatbelt to cut it. The sharp blade is designed for quick and efficient cutting of standard seatbelt material.
4.2 Using the Window Breaker
- Remove the protective cap from the tungsten steel hammer tip.
- Press the hammer tip firmly against a corner of the side window glass. The spring-loaded mechanism will activate upon sufficient pressure, releasing the tip to shatter the glass.
- For optimal results, aim for the corners of the side windows, as these areas are generally weaker. Avoid attempting to break the windshield, as it is designed to be shatter-resistant and may not break easily with this tool.
- Once the glass shatters, use your foot or the flat end of the hammer to clear any remaining shards before exiting.

Figure 4.1: Demonstrations of using the safety hammer for window breaking and seatbelt cutting in an emergency.

Figure 4.2: A mock test demonstrating the effectiveness of the safety hammer's window breaking capability on a test glass.
5. Maintenance
The Serjur Safety Hammer is designed for minimal maintenance. Keep the tool clean and dry. After use, especially in an emergency, inspect the hammer tip and blade for any damage. If the tool has been used to break glass or cut a seatbelt, it is recommended to replace it to ensure optimal performance in future emergencies.
Store the tool with its protective cap on and inside its provided bag to prevent wear and tear and to keep the components sharp and ready for use.
6. Troubleshooting
The Serjur Safety Hammer is a straightforward mechanical tool. Most issues relate to improper usage or expectation.
| Problem | Possible Cause | Solution |
|---|---|---|
| Window does not break easily. | Incorrect target area (e.g., windshield instead of side window). Insufficient force applied. | Aim for the corners of side windows. Apply firm and direct pressure. Remember windshields are designed to be highly resistant. |
| Seatbelt cutter not cutting effectively. | Seatbelt not fully inserted into the slot. Blade dull from previous use. | Ensure the seatbelt is fully seated in the cutting slot. If the blade is dull, replace the tool. |
| Tool appears damaged after use. | Normal wear and tear from emergency use. | This tool is designed for single or limited emergency use. It is highly recommended to replace the tool after it has been used in an emergency to ensure full functionality for future incidents. |
7. Specifications
| Specification | Detail |
|---|---|
| Brand | Serjur |
| Model Number | B085HDR76L |
| Manufacturer | OUDE |
| Item Weight | 11.3 ounces |
| Product Dimensions | 6.69 x 2.95 x 0.79 inches |
| First Available Date | March 5, 2020 |
| Material | Aluminum Alloy (Body), Tungsten Steel (Hammer Tip), Stainless Steel (Flat Hammer) |
| Features | Window Breaker, Seatbelt Cutter, Hammer, Non-slip Handle, Hidden Blade Design, Fireproof, Waterproof |
8. Warranty and Support
Specific warranty information for the Serjur All Metal Safety Hammer is not provided in the product details. For any warranty claims, product support, or inquiries, please contact the manufacturer, OUDE, or the seller directly through the platform where the product was purchased.
Always refer to the official Serjur brand store or product listing for the most up-to-date information regarding warranty and customer service.
Thank you for choosing Serjur for your safety needs.
