Hex driver impact sockets in drop forged black Chrome-Molybdenum steel * Set with 8 sockets in Metric sizes in 1/2-inch drive: * Size ranges from 1/4, 5/16, 3/8, 7/16, 1/2, 9/16, 5/8 & 3/4-inch * Size markings engraved on each individual impact socket * Heavy duty carrying/storage case included