Kennedy 16mm Insulated Hexagon Socket 3/8" Double Triangle 1000 V Manufactured from chrome vanadium steel, these durable sockets from Kennedy feature dual layers of insulation to protect against short-circuits up to 1000 volts. Features and Benefits Sizing marked on the socket body for easy identification Individually tested against high voltage for reliable safety Multi-layer insulation isolates against up to 1000 volts of electricity Standards IEC 60900 GBP 14.99 1