TEKTON 3/8-Inch Drive Socket Set, Metric, Cr-V, 10 mm - 19 mm, 10-Sockets | 1204 Made from high-strength, heat treated chrome vanadium steel Corrosion-resistant chrome plated finish 12-point, high-torque design grips flat sides of fastener, not corners, preventing round-off Notched drive locks onto ratchet or extension Set Includes: 10-pc. 3/8 in. dr. 12-point sockets (metric): 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 mm