First, they are designed to hold the wire between the prongs, leaving a slight gap when closed. If it wasn't there, it would likely damage the larger wire. Conversely, it does not hold smaller gauge wire (e.g., 22 ga or less) well between larger mandrels. Now for the awkward part. The first set I received came with the smallest spine flex about 30 degrees out of parallel, with the tool rendering the top two spines unusable. Many thanks to the seller for a very quick replacement and for providing a return label for the damaged one. HOWEVER the replacement kit, although better, still has some manufacturing defects, unacceptable for a tool at this price point. It looks and feels more like something I would get from Harbor Freight (for those who know what HF quality is). There is a place for cheap tools but it's not what I expected for the price. All in all, this tool may or may not work for what you need. Previously it was fine to bend 20 ga wire around large mandrels and get a constant diameter bend every time. As I mention in the title: This will work, but it's not ideal. Previously it was fine to bend 20 ga wire around large mandrels and get a constant diameter bend every time. As I mention in the title: This will work, but it's not ideal. So far it's been ok 20 ga wire to bend large mandrels and get a constant diameter bend every time. As I mention in the title: This will work, but it's not ideal.
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