Description: 【With Screws】: Each ground clamp comes with screws for secure installation, ensuring you have everything needed to pass electrical inspections with ease 【Versatile Fit】: Designed to accommodate pipes or copper rods ranging from 1/2" to 1", and compatible with wire sizes #10 - #2, these clamps meet industry standards 【Premium Material】: Crafted from quality brass, these clamps offer great conductivity and corrosion resistance. They are sturdy and can be tightened securely without breaking (avoid over tightening to prevent damage) 【Easy Installation】: Simply select a clean, dry on your water or steel pipe, wrap the clamp around it, insert the grounding wire, and tighten. Note that this product is suitable for metal pipes only; painted or other material pipes are not compatible 【Enhanced Security】: The ground clamp ensures a secure connection between the grounding wire and your water or steel pipe, helping eliminate electrical faults and preventing electric shocks for improved security in your environment Specification: Material: Brass Package Size: 16cmx8cm/6.30inchx3.15inch Size Chart: 16cmx8cm/6.30inchx3.15inch 16cmx8cm/6.30inchx3.15inch Package Includes:3 Ground Clamp Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.