Drop Forged, Chrome Vanadium Steel (50BV30), Heat Treated, Corrosion-resistant Matt finish
Set include: 1/4" Dr.: E4, E5, E6, E7, E8, 3/8" Dr.:E10, E11, E12, E14, E16; 1/2" Dr.: E18, E20, E22, E24;
All the size stamp marked on the socket, which is permanent.
It comes with a storage case for easy transportation, and quick organization.