3/4" Dr. 2-3/8" Deep Impact Socket Chrome molybdenum alloy steel provides the strength and flexibility to handle high torque impact tools. Radius corner design reduces wear and increases torque on fasteners by placing force on fastener walls rather than fastener corners. Chamfered opening quickly aligns fastener to socket. etched and roll stamped markings to ensure permanent socket identification. Deep drive 6 point impact socket. All sockets are rigorously tested, ensuring peak performance and durability while meeting ANSI standards. Lifetime Guarantee. CR-MO alloy steel for long life 476D