Mountz, Inc. 1/4" Hex Insert Pin Chuck 020248

These handy tool accessories let you to connect various square drive size tools with different size sockets. Built to meet the rugged requirements of industrial users and maintenance technicians, the adapters are fabricated using high-quality micro-alloyed steel, added strength and durability. Heat treated and precision machine to provide the best combination of hardness, tensile strength and torque strength.