GEARWRENCH 84933N 1/2" Drive Metric Impact Socket Set (25 Piece) Chrome molybdenum alloy steel (CR-MO) 1/2 drive impact sockets with exceptional strength and durability Off-corner loading technology to reduce fastener rounding, even after repeated use Manganese phosphate corrosion-resistant coating, laser etched with high-visibility markings and hard stamped labels 6-point sockets with chamfered openings and an attachment port compatible with traditional ratchets Parallel neck down design on 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, and 14mm sockets allow improved access around restricted fasteners Meets or exceeds ASME B107.2 specifications for proven strength Available in standard and deep styles in 1/4&#034;, 3/8&#034;, 1/2&#034;, 3/4&#034;, &amp; 1&#034; drives. Parallel neck down feature on 3/8&#034; and 1/2&#034; drive to increase access to restricted fasteners.