The 14 PCS 1/2" Drive Standard Impact Socket Set is Constructed from high-strength Chrome-Vanadium Steel , with a protective black phosphate coating. 6-point design keeps a tight grip and prevents rounding off corners. Laser-etched with high contrast and specific size marking for identification. It helps you select the size easier. It comes with a sturdy and convenient storage case. Keep each piece in the proper position. Constructed from high-strength Chrome-Vanadium Steel , with a protective black phosphate coating. Set Includes: 11mm, 12mm, 13mm, 14mm, 15mm, 17mm, 18mm, 19mm, 21mm, 22mm, 24mm, 27mm, 30mm, 32mm 6-point design keeps a tight grip and prevents rounding off corners. Laser-etched with high contrast and specific size marking for identification. It helps you select the size easier. It comes with a sturdy and convenient storage case. Keep each piece in the proper position. All products meet or exceed ANSI performance standards.