This lock is old, I didnt even know they made it anymore. But after living in NYC for over 30 years and have had too many stolen, I've learned the best lock is no lock.

I've gotten to the point that if it's not safe for me to ride my bike and bring it inside with me, then I didnt take it at all.

But if i had to lock it, My choice is a hefty "American" lock, and short section of tow truck rated chain.