I have used these (preinstalled or installed them myself) on several bicycles for years now, and none of them have been stolen yet. Mind you, that might also ha

I have used these (preinstalled or installed them myself) on several bicycles for years now, and none of them have been stolen yet. Mind you, that might also have something to do with the bicycles not looking very desirable (while being technically sound of course). For some added safety, there is also a version where you can attach a chain or cable which you can thread around a bike stand (https://www.amazon.de/Abus-11263-8-Fahrradschloss-St4850-schwarz/dp/B00IYAZDY6/ https://www.amazon.de/Abus-11263-8-Fahrradschloss-St4850-sch...)