this is the result of securing only the wheelwith this security , the thief needs no more than 5 secondsCutting this protection is not easyIf you have such nuts, replace them with regular ones.here the owner only lost the saddle
Always try to use two locks. Secure through the frame and wheel.
Whenever possible, park within range of a city CCTV camera. It’s a (slight) deterrent to thieves and helps with bike recovery.