1. High-strength materials: Made of chrome vanadium steel and made durable by heat treatment to ensure that the tool remains stable and reliable even for long-term use. 2. Corrosion-resistant coating: The surface is coated with black phosphate coating, which effectively prevents corrosion and extends the life of the tool and maintains its performance even in harsh working environments. 3. Multifunctional Compatibility: Designed for air impact wrenches, electric impact wrenches and manual ratchet wrenches, it offers a wide range of application scenarios and convenience. 4) Multiple Size Options: Available in 1/2", 3/8" and 1/4" sizes to meet the needs of different sizes of screws and nuts and adapt to different work environments. 5. Classic black appearance: the tool has a classic black design, which is not only beautiful and generous, but also easy to identify and find in the workplace, improving work efficiency.