The NSI UC-214 Bronze Heavy Duty U-Bolt Clamp is designed to grip ground pipes with a 1" diameter in parallel or 90-degree positions with an easily adjusted, durably strong design. The high-copper-content alloy of the clamp provides excellent conductivity and heavy-duty strength, alongside the silicon bronze nuts and lockwashers. 200- series U-bolt clamps fit two individual conductors for grounding on the same pipe. Use this U-bolt for demanding applications in harsh environments, including direct burial in earth or concrete. UL Listed 467 for Grounding and Bonding. Stock products you can rely on—stock NSI.