The Kryptonite Laminated Key Lock actually doesn't have any weaknesses. It has a heavy duty, all-weather performance laminated steel body and a hardened steel shackle, a double deadbolt locking mechanism that gives it extra strength, and comes with two keys, in case losing things is your weakness.
Plated, laminated steel body
Hardened steel shackle
Double deadbolt locking mechanism for increased strength
44 mm (1 ¾'') Padlock body