Copper grounding rods by LEC are an excellent addition to the tools that we use to reduce ground system DC resistances and AC impedances. This provides a much better environment in which a direct lightning strike can be shunted to the ground. Copper grounding rods are designed to meet UL requirements. If you have any questions regarding this piece or require further information, please do not hesitate to contact us: https://www.lightningprotection.com/grounding-earthing/chem-rod/