Manter
Lunch Mob
But if you have one your insurance will buy you another bike. Whereas if you lock it to a drainpipe behind a hedge, you may still be arguing with the insurance firm 8 months later.,...I've heard that those things are just an advert that you can afford a decent bike, as you have the money to spunk on a mini bike holder.
A hacksaw, tin opener or spoon then opens it and your bike is gone.