Neiko 01131B 3/8-Inch Allen Hex Driver Impact Socket Set, SAE 3/16 Inch - 1/2 Inch, Cr-Mo | 7-Piece Set Hex driver impact sockets in drop forged black chrome-molybdenum steel Set with 7 sockets in SAE sizes with 3/8-inch drive Most commonly used sizes: 3/16, 7/32, 1/4, 5/16, 3/8, 7/16, 1/2-inch Size markings engraved on each individual impact socket Heavy duty carrying/storage case included