Adjustable length up to 450 mm with a quick release single click for effortless length adjustments Portable and reliable design with a 1/2-inch standard square drive head for compact size and stable operation without slips or looseness Two-way ratcheting mechanism enables smooth forward and reverse operation, providing versatile use in confined spaces High-frequency quenching process and chrome-vanadium steel construction deliver long life and corrosion resistance for consistently dependable performance Non-slip ergonomic handle with a retractable mechanism delivers higher torque and durability for extended use without hand fatigue Use scenarios - Automotive maintenance and repair in tight engine bays where extended reach and reversible drive are needed to access recessed fasteners - Assembly or disassembly of machinery and furniture that use 1/2-inch drive fasteners, where adjustable length helps reach hard-to-access bolts - Field service tasks requiring reliable torque and grip over long periods, such as routine servicing of equipment in confined spaces This extendable ratchet wrench provides practical, durable performance with clear attention to function, compatibility, size, material, and real-world usability.