Arlington 721B-5 Solid Brass Bare Wire Ground Clamp with Steel Screws, Fits 1-1/4-Inch to 2-Inch Pipes, Bronze, 5-Pack. Used for grounding bare wires, fits Wire range 10-2. Includes steel screws. Solid Brass Construction. Adjusts from 2-1/2-Inch to 4-Inch to fit piping. UL and CSA Listed. In the event any of our products are found to be defective, we will replace them with new product free of charge. The time limit for this warranty is one year following the date of sale or one year after the date of installation, whichever is the earlier date. This warranty does not apply when the product is used for any purpose other than the intended use as described in the Arlington literature. This warranty does not apply when the product is used for any installation which would violate the national electrical code or any code which takes precedence in a particular jurisdiction. Labor is not included.