Couldn't say. I just told John what I wanted out of the strings. 452x is what I've used for 2 years now. They stay put, don't fall apart and increased speed. Set up both mine and my brothers this summer. Neither has needed adjustment since. Got to love it. First year my brother has used a tubeless peep. He was very scepticle and for years has warned me against it, couldn't be happier.