- Quick Release Design: adjustable length up to 450 mm with a quick release mechanism for easy tool removal and flexible use in different tasks and environments. - Increased Stability: standard 1/2 square head for precise size; designed to minimize shaking or loosening; supports two-way and reverse steering for versatile tightening and loosening. - High Hardness: made from high-strength chrome vanadium steel; high frequency hardening enhances hardness and rust-proof durability for longer tool life. - Increased Durability: ergonomic retractable design with a non-slip grip for comfortable handling and higher torque; suitable for long use without hand fatigue. Use scenarios - Automotive maintenance or repair: reach recessed fasteners in tight engine bays or under dashboards, where adjustable length and stable operation are beneficial. - Bicycle maintenance: service bike components in confined spaces, such as under seats or near the frame, where a compact, controllable wrench is advantageous. - Home DIY and furniture assembly: install hardware or assemble furniture in everyday workshop or living spaces, providing reliable torque and easy handling.