Bullet_point: ['Hex bit impact sockets are designed to withstand the high torque and force associated with impact tools in repetitive application', 'Hex bit impact sockets are used wherever powered drive tools are used to install or remove fasteners', 'Proto Hex Bit Impact Sockets can be used on stubborn fasteners', 'Side locking hole, Made in USA', 'Tight tolerances for snug fit on fastener'] (Page 1)