1/2-inch drive, 24-inch (600mm) length, made of high-quality Cr-Mo steel, professionally heat-treated for high strength and toughness. Surface black phosphate coating resists rust and corrosion, suitable for high-torque operations. Product features:- High-quality Cr-Mo steel, heat-treated for durability and resistance to high torque- Black phosphate coating, effective rust and corrosion prevention- Built-in spring-loaded ball, stable connection, easy to load and unload- Extends operating range, suitable for narrow and deep-hole operations- Widely used for auto repair and industrial maintenance, ideal for professionals and DIY users Product specifications:- Material: Cr-Mo steel- Drive type: 1/2-inch- Length: 24 inches (600mm)- Surface treatment: Black phosphate coating- Application: Auto repair, industrial maintenance Notes:- Manual measurement, slight size error is normal- Color difference may occur due to screen display