You'd never think something like this requires so much engineering, but it does! Few people truly consider the importance of a quality lockring until it snaps your thread. Get a proper lockring like this one. Buy once, save your tears.

Very well made. Received quick. Good product

What can I say that hasn't already been stated about this high-quality lockring? It's nicely machined, the threads are perfect, and it works like a charm to keep my cogs from spinning off. Cheers!

Great design and a perfect complement to Velobike’s cogs and rings.