The 14pc. 1/2″ Metric 6pt. Deep Impact Socket Set by Sunex is Chrome Molybdenum alloy steel for long life. The radius corner design extends the life of fasteners. It comes with a heavy duty blow molder storage case. The sizes included are 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 21mm, 22mm, 26mm, 27mm.