Bike Locks
What you have joined, let no thief put asunder. With hardened steel links and orbital steel rivets this little wonder rivals the venerable U-lock for sheer protecting power. But it's compact and relatively light (just 2 pounds, or one thousandth of a ton). Best of all, it folds down into its own case for easy carrying or mounting.
Burly like a U-lock, only lighter. And convenient as a cable. This may just be the best of both worlds. Kevlar-core braided steel cable construction with interlocking hardened steel cups and semi-universal mounting bracket to fit most frames.
You get the idea. Same basic design, thinner cable, less weight. Perfect for those I'll-only-be-a-minute security applications like espresso runs and trips downtown with the bike on the roof rack.