Irwin 1837572 Socket Adapter, 1/4 in Drive, Hex Drive, 3/8 in Output Drive, Square Output Drive, 2 in L, Steel

For driving and removing fasteners. Engineered for maximum durability and long life. Forged, so they fit more precisely, which reduces stripping. Heavy-duty, cold-forged, high-grade steel to withstand extremely high-torque output. Black oxide finish resists corrosion.