This hex key is not insulated. The steel handle is 2 11/64 inch long, is black and has a straight style/type. It meets the standards for ANSI B18.3.2M. In addition, it is made of alloy steel, has a metric measurement type, is corrosion-resistant, has a black oxide finish, plus it is not non-sparking, is not non-magnetic, and is not tether ready.