Features: Achieve compatibility between 1/2 wrench 1/4 hexagonal bit with this quick changing adapter, featured for secure transmission in heavy duty applications. Engineered with ≤0.02mm tolerance interfaces and antislip knurling, the shock resistant adapter maintain alignment through its pin lock system while preventing bit slippage Ideal for automotive technicians, industrial maintenance, and enthusiasts requiring reliable tool conversion for both heavy machinery assembly and delicate screw fastening tasks. Perfect for tire nut removal in auto shops, furniture assembly in home workshops, or equipment maintenance in manufacturing facilities where multiple bit size is frequently required. The bottom grooved design ensures compatibility with wrench ball, delivering not spin risk during continuous operational. Specifications: Component:Steel Size: Approx.50x22x22mm/1.96x0.86x0.86inch Package Includes: 4Pcs Socket Adapter note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.