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This is a screw-in clamp for the ground rod, which means it is, in simplest terms, a safety device. It does not allow the rod to be pulled out of the ground during strong and gusty winds or rain. The product is made of very high quality stainless steel, which is why it has such a high scale of resistance to weather conditions as well as mechanical damage. Screws for the clamp are included with the clamp.
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