We’ve been a huge fan over the years of all things Abus. Their 8808c security chain uses 8mm square chain links covered in a soft-touch fabric to prevent frame damage. A resettable 4-digit combination makes locking up even faster and simpler than keys.
![](https://www.onyourleftcycles.net/wp-content/uploads/2023/05/abus-8808c-lock.jpg)