The Essential Security U-Lock from Yale is a robust padlock specifically designed for bicycle security. Weighing 980 grams, it features a solid construction made from hardened steel to provide maximum protection against theft. The shackle thickness is 18 millimeters, offering additional security. The lock has a locking mechanism that is operated with a key, and the locking circumference of 250 millimeters allows for flexible use on various objects. With a length of 250 millimeters and a width of 15.8 centimeters, the lock is compact yet sufficient to ensure a secure connection. The black color gives the lock a timeless and discreet design that blends well into most environments. This U-Lock is a reliable choice for anyone who values security and quality.