This hex key set has a width of 3¾ inch, a height of 9⅜ inch, and a length of 9⅜ inches and is not insulated with an alloy steel handle. It meets the standards for ANSI B18.3.2M R-2008, ASME B18.3 R-2008, ISO2936:2001 C-2007. In addition, it is made of steel, has a metric measurement type, is not corrosion-resistant, has a satin finish, plus it is not non-sparking, is not non-magnetic, and is not tether ready with a plain grip. This hex key set includes nine pieces.