ABUS 34 Buffo +USH 34 Standard Shackle Bicycle U Lock - 230mm 12mm round shackle Shackle, lock body and the supporting elements are made of special hardened steel Double bolting shackle in the lock body Automatic keyhole cover protects against dirt and corrosion Two keys supplied with the lock 12mm hardened Steel Shackle Hardened Lock Body uses a reversible Key Easy to use Mounting Bracket Fits Most Frames.