Kobalt 338619 11-Piece 1/2-Inch Drive 12-Point Shallow Socket Set, Metric, includes 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, and 21-mm Sockets 1/2-INCH DRIVE - 1/2-Inch drive sockets fit any similar sized ratchet, wrench, adapter, or extension bar DURABLE STEEL TOOLS - These sockets are made from drop forged, heat-treated chrome vanadium alloy steel for long lasting durability CORROSION RESISTANT - Professional grade high-polish chrome finish is easy to clean and rust and corrosion resistant INCLUDED SIZES - Set includes 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, and 21mm shallow metric sockets LASER ETCHED SIZES - Sockets have laser etched size markings that are easy to read and blue stripes help identify these metric sockets from SAE