7 Piece Insulated SAE (Inch) Nutdriver Set includes: Inch Nutdrivers: 3/16, 7/32, 1/4, 5/16, 3/8, 7/16, 1/2" Blade CVM steel, hardened Insulation molded directly onto blade Deep drawn 1" socket Wiha SoftFinish handle, multi-component Each tool individually tested to 10,000 volts and rated to 1,000 V ac or 1,500 V dc Insulation according to EN/IEC 60900, ASTM F-1505-01, New VDE 0682/part 201, DIN 7437, NFPA70E and CSA