The TEKTON 3/8 Inch Drive x 6 Inch Impact Extension reaches past obstructions or into tight, narrow spaces and delivers the torque needed to break loose stubborn fasteners. A spring-loaded detent ball securely latches onto sockets, preventing them from being dropped or left stuck on fasteners. Four detent grooves provide a secure connection with the drive tool and a detent pin hole allows user to choose whether to engage pin. Made from premium 6140 Cr-V steel, it is precisely heat treated for superior strength and protected by a corrosion-resistant manganese phosphate finish.