This part of IEC 60855 is applicable to insulating foam-filled tubes and solid rods, of a circular cross-section, made of synthetic materials with reinforced fibreglass and intended to be used in the manufacture and construction of tools, devices and equipment for carrying out live working on electrical systems operating at voltages above 1 kV. Unless otherwise stated, the use of the terms foam-filled tubes and solid rod in this document refers to insulating foam-filled tubes and insulating solid rod . Foam-filled tubes and solid rods of cross-section other than circular and/or made with material other than synthetic materials with reinforced fibreglass are not covered by this part of IEC 60855.