I bought two pieces, the year of production is 2022, on one in a month there are two hernias, I bought another one, on the second in three months three hernias, from different sides in different places, and on the other axis there are six summer ones from another manufacturer with 70% wear and no hernias . Operation is neat, without holes. It would be better after the first hernia bought another rubber on both wheels. This speaks of the "quality" of the cord. I highly do not advise and I myself will never take cordiant again.