Kryptonite New York Diamond Standard U-Lock

With a security rating of 10 out of 10 in the brand's classification, the Kryptonite New York Diamond STD lock effectively deters thieves. You can leave your bike parked for several hours in less busy areas with total peace of mind. With a 26 mm diameter, the diamond-coated steel shackle withstands angle grinder attacks, while the cylinder and lock are protected by a rotating cover. The Kryptonite New York Diamond lock includes the FlexFrame-U mount, a convenient system for attaching the lock to your bike while riding, and comes with a set of 3 keys. And if you're still not convinced, Kryptonite offers 5 years of free anti-theft insurance (ATPO), covering up to €4,500 in case of bike theft. They must be very confident that it is extremely difficult to break. Stop worrying about your bike and let thieves forget about stealing it. MORE INFORMATION: How to choose the best lock to protect your bike?