Abus Ultra 410 U-Lock will help you secure your personal property from being ripped off in broad daylight. Add a level of deterrence to your lockup that will keep thieves away for good. The durable, double bolting 12mm shackle will keep your bicycle secure in any mid-level security situation. If you are looking for a solid lock that will make sure your bike doesn't roll off without you knowing the Ultra 410 is the lock for you.