This 9 piece insulated nut driver set features an assortment of popular nut driver sizes. Each are individually tested to exceed the IEC 60900 and ASTM F1505 standards for insulated tools. The highly durable, black nylon case features a zipper closure, custom-fitted tool pockets plus an extra pocket for storage of papers and other items.Features Durable, two-layer, molded insulation protects against electric shock Highly durable, black, nylon case features custom-fitted tool pockets Tip-Ident® quickly identifies nut driver and size Tip-Ident Quickly Identifies Nut Driver Size Meets or exceeds IEC 60900: 2012, ASTM F1505-10 standards for insulated tools Replacement case available (Cat. No. 33534) Nut Drivers with Full hollow shafts facilitate work on long bolt applications Tool set includes 3/16-Inch, 1/4-Inch, 5/16-Inch, 11/32-Inch, 3/8-Inch, 7/16-Inch, 1/2-Inch, 9/16-Inch and 5/8-Inch nut drivers Warnings Because moisture, films, or other surface contaminants are conductive, Klein insulated tools must be kept clean, dry, and free of any surface contaminants. Only use tools that are marked with the official international 1000-volt rating symbol shown above, if there is any chance that the tools will make contact with an energized source. Wear approved eye protection. Whenever possible, always de-energize lines and equipment prior to working on or around them. Klein insulated tools are designed only to reduce the chance of injury where the tool may make contact with an energized source. Always inspect your tools before use. Destroy tool if insulation becomes damaged in any way. Do NOT touch uninsulated portion of the tool or any conductive object when either might contact an energized source. Insulated: Yes Number of Pieces: 9 Overall Length: 9.75 to 11.375 in (24.8 to 28.9 cm) Overall Width: 15 in (38.1 cm) Overall Height: 3.5 in (8.9 cm) Height: 4.75 in Width: 14.5 in Depth: 9.75 in Weight: 6 lbs Shaft Length: 6 in (15.2 cm) Handle Type: Cushion Grip Material: Nylon (case) Standard: IEC 60900 and ASTM F1505 Measurement Standard: SAE DownloadsSpec SheetInstructionsInsulatedTools.pdf