This new design has the lock mechanism connected to a metal wire which is attached to the sidebar of the bike. The lock dangles from one end. when you find a stand to which you want to attach your bike pull the lock from the handle (it is connected to a metal wire that is internally connected to a pulley and extends) and wind it around the stand. lock. end.-- nomadic_wonderer, Nov 03 2004 this one is very very similar. http://www.halfbake...self-locking_20bike [po, Nov 03 2004] I hate having to buy the lock separetely. bun.-- FireElf, Jul 25 2006 [+]-- monojohnny, Jul 25 2006 I only learnt to ride a bike last summer and I've already lost two locks.+-- squeak, Jul 25 2006 random, halfbakery