I already have a big ABUS (main) Castle. But I have a sought what has less weight and you can use when you are during the day times 10 minutes at the post office or the grocery store. According to Figure I came out of a thinner cable. The 10mm I have smooth underestimated and I just got all the more. At busier corners that no opportunity thief gets so easily - without drawing attention.
I will combine the whole thing with an ABUS 488146 aluminum combination lock 145/40 By 2m length the front wheel is also additionally secure the bicycle.
However, you should have a bag here because by the rigidity can only ugly / störund somewhere attach the bicycle.