Blackburn Leavenworth U Lock

Blackburn Leavenworth U Lock. We have 2 words for bike nappers looking to breakthrough this beauty: Good Luck! The Leavenworth U lock by Blackburn can withstand up to 10 tons of cut strength, features a dual bolt mechanism to make it impervious to bump keys and picks, and is crafted with a hexagonal 16mm alloy steel shackle for the maximum resistance to cutting and leverage. It has been awarded a security rating of 9 out of 10, and is guaranteed by Blackburn to prevent theft. This heavy duty lock includes 3 custom laser cut keys, and a key replacement program.