Master Lock 8195DLW Force Long Length U-Lock,  5/8 x 11-1/4 Inch
The object is to get away on your bike. Not for someone to get away with it. Security does not get any tougher than this. These locks are built with double locking shackles and high-security disc cylinders. Pliable rubber coated shackles protect your bike. All Force U-locks include a free anti-theft guarantee.  The force series has tough U lock protection with three tons of pull resistance.