Product Information
- Material: carbon steel
- Model: M3 M4 M5 M6
- The product is smooth and burr-free, with high-quality workmanship, and is fast and durable.
- The thread is deep, and the thread is neat and clear, and the force is even and not easy to slip.
- Made of high-quality stainless steel, with high strength, high toughness and durability.



















