10 Pcs Professional Chrome-plated Metric Socket Set Sizes:5.5mm,6mm,6.5mm,7mm,7.5mm,8mm,9mm,10mm,11mm,12mm. Made from high-alloy steel and high-strength, heat-treated for performance Professional quality 1/4" drive sockets Standard socket sizes This sockets are made of drop-forged steel, chrome-plated to resist corrosion High Quality Notched drive locks onto ratchet or extension come with assorted sizes for every job Set Includes:10- Piece 6-point sockets (metric): 5.5, 6, 6.5, 7, 7.5, 8, 9, 10, 11, 12mm.