pretty much the standard UA lock.

there are two options..

Key retaining, KR .with the exception in that you can take the key out when the lock is unlocked…. (with standard urban arrow and most dutch bikes…. the key stays in unless you lock it, then it comes out…key retaining, so you can never be without a lock when your out..)

Non Key Retaining NR you can take the key out of the lock when its unlocked...like most locks.

A convenient solution to protect your bike from quick theft in one easy step. Just like our frame lock 4750, which has been specially developed for wheels with a large tyre.

• 8.5 mm steel shackle

• The case, the shackle as well as supporting elements of the locking mechanism are made of specially hardened steel

• Extreme large aperture for extra wide tires (89mm internal measurement)

• Closing mechanism for easy attachment of accessory to the lock body

• The NR (non key retaining) version allows taking the key out of the cylinder