Wheel Lock
Also called an O-lock or ring-lock, this is a low security mechanism mounted on the frame that immobilizes the rear wheel by moving a steel bolt through the spokes to prevent motion. It uses a straight or circular bolt which extends from the housing. This type of lock is common in Scandinavia, the Netherlands, China, India and Japan.
An O-lock prevents riding the bicycle but does not, by itself, secure the bicycle to a stationary object. This type of lock is effective and convenient for securing a bicycle against opportunistic theft, when the bike is left unattended momentarily. It forces the thief to carry the bicycle.
The O-lock also conveniently secures the rear wheel: only locking the frame is needed, to secure both the frame and the rear wheel. Some models have an optional cable or chain that plugs in to the body of the lock to enable the bicycle to be secured as well.
Read more about this topic: Bicycle Lock
Famous quotes containing the words wheel and/or lock:
“But if you know that you are a man too, and that even such are those that rule, learn this first of all: that all human affairs are a wheel which, as it turns, does not allow the same men always to be fortunate.”
—Herodotus (c. 484–424 B.C.)
“then take off your flesh,
unpick the lock of your bones.
In other words
take off the wall
that separates you from God.”
—Anne Sexton (1928–1974)