Cementex HKS-8T916 T Handle Hex Wrench Set, 8-Piece 8-piece T handle hex wrench set 1/8-Inch by 6-Inch, 3/16 by 6-Inch, 1/4 by 6-Inch, 5/16 by 9-Inch, 3/8 by 6-Inch, 7/16 by 6-Inch, 1/2 by 6-Inch, and 9/16 by 6-Inch T handle hex wrench Cementex double insulated tools are tested to 10,000 Rated for 1,000-Volt when working on live parts Cementex is the only double insulated hand tool supplier which controls the entire manufacturing process from insulation through testing