The u mini 401 packs a lot of lock into a small package this stylish little lock is small enough to carry on your belt but strong enough for the city or to leave a bike locked at the station all day the small size is not only ideal for storage and transport but it also makes it more difficult to reach with hacksaws bolt croppers or car jacks made of high quality temper hardened steel the u mini 401 features the same through body shackle technology as its bigger brother the super ultimate