Hexagon socket- 3/8 inch fully insulated- Width across flats: 14mm, Holex, Mfr#: 637687 14

With plastic insulation up to 1000 V to DIN EN IEC 60900 / VDE 0682-201. Standard: DIN EN IEC 60900 / VDE 0682-201. Note: For working at voltages up to 1000 Volts. In safety areas only fully insulated tools No. 637681 – 637689 may be used in combination. Square drive: 3/8 in drive output end: 25 mm Length: 45 mm