Antal, Selden, Harken, DEUS, ArbPro, Armare, Ronstan, Wichard, and Tylaska all have their names on X-rigging type rings and Shizll even has an arborist specific ring more similar to the ABR ones. There is absolutely nothing proprietary about these rings. Unlike ocean's modded ascender, the rope wrench, HAAS, or Matt Cornell saddle, X didn't have to go through designing, manufacturing, and testing. He introduced something to the arb market that already existed elsewhere. He didn't have to spend time and money rebranding them, he chose to. People are still going to buy X-rings because they want to support David, but to think he should have exclusive rights in the arb industry is ignorant.
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