Quick-release design: extendable length up to 450 mm with a quick-release mechanism that allows the tool to be removed with a single click. Reversible function: features a 1/2 inch drive square head for precise sizing and easy operation. designed for stable, uniform performance to prevent wobble or loosening. two-way direction enables smooth forward and backward operation. High hardness: crafted from high-strength chrome-vanadium steel and treated with a high-frequency quenching process to increase hardness and corrosion resistance, extending the life of the tool. Non-slip grip: ergonomic handle with an extendable mechanism that delivers higher torque and greater durability, suitable for long-term use without hand fatigue. Use scenarios: - Automotive repair and maintenance: reach recessed fasteners in engine bays or tight spaces where length and quick removal help save time. - Bicycle maintenance and repair: access bolts in difficult-to-reach areas such as frame joints, hub components, or derailleur mounts. - Furniture assembly and home improvement: handle long or hard-to-reach fasteners in installations or complex builds with improved control and comfort.