This pipe bracket can be used to ground plumbing and other conductive construction piping. This pipe is required in all buildings because it helps to protect conductive building facilities from power surges by grounding the conductive material. To ground this clamp you must crimp an earth cable to the clamp and then attach the earth cable to the building main earth outlet. Main Features: Grounds buildings conductive piping Technical Specification: Size Range: 12mm - 32mm 12mm - 38mm Finish: Stainless Steel Standards: BS 951 Screw: M5 1 Year Guarantee Included