Forgetting your bike lock can put a damper on your day, which is why the InterLock bicycle lock is perfect for always keeping your lock on-hand and ready for use. The InterLock uses the hollow inner tubing of your bikes frame as a place to store your lock and is easily installed in a matter of minutes. Once installed, the InterLock is easily pulled out through the opening below your seat and locked up in a a few seconds.
Bicycle theft is a major problem for many big cities, which is why proper security measures are a must to keep your gear from getting stolen. The InterLock is perfect for cyclists who are constantly on-the-go and need a security device that is convenient, and above all cost effective; the device sells for only $39.
The InterLock is Built-in to Your Bike for Easily Locking Up in a Snap
Michael Hemsworth — December 31, 2012 — Lifestyle
References: the-interlock & coolmaterial