The Club is essentially a bar with a lock that consists of two reinforced steel bars that wrap around the steering wheel and column. The length of the bar protrudes so that when installed, it will hit the door, windshield or seat and thus prevent the steering wheel from being turned in any direction. The bar can be unlocked and removed safely only by the owner with the key that comes with the lock.
Once attached and locked, the Club prevents the steering wheel from being turned and therefore immobilizes the car. Even if a thief breaks into the car and starts the engine, the thief can't drive away with the car because the steering wheel is essentially locked in place.
Like the bicycle lock, the Club is not entirely foolproof. There are many ways to dismantle or otherwise bypass it if the thief is resourceful, patient and determined to steal the car. The steel bar, of course, is difficult to cut through, but a seasoned thief can easily cut one bar off in less than a minute using a pair of bolt cutters. Another way that thieves have been known to weaken this device is by spraying liquid nitrogen onto the club, making the bars very brittle and thus making it easy to break with a hammer. Another disadvantage to the Club is that it prevents the car from being stolen, but not the contents inside the car.
In the end, if the thief really wants to steal the car, no matter what preventative measures one takes, the car will likely be stolen. Devices such as the Club, however, are a moderately effective deterrent for thieves who are too lazy or unprepared to deal with a steering wheel lock. In this case, it is likely that they will simply move on to another car that does not have the Club installed.
