These are good quality ferrules. But please reconsider how you named the products, it's very confusing. For example, the product is SC10-6 for 8Ga, 1/4 inch hole. I already had a pneumatic crimping tool. If using one of these tools, make sure you insert the ring into the tool so that it flattens parallel to the plane of the hole. Ring. Rotating it 90 degrees creates a square that isn't as strong, and whatever you screw it into won't sit flat. I was too high in the tool with the ring so could have done better if I had taken my time, but I crimped an adequate amount in the example photos.
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