A STANDARD TYPE STOPLOCK DESIGNED WITH  EXTRA LOOP  IN THE BAR  FOR FIXING ACROSS FATTER STYLE AIRBAGS. Some manufacturers, such as Citroen etc have more bulbous airbags , which are nearer to you with the wheel rim then is set further back, so you need a curlier bar to hook over it!

A visual deterrent is often all that is needed to put off the modern thief that uses digital signal boosting from your remote control to open up your pride and joy as if it were their own in a couple of seconds. They don't want to carry heavy duty  tools nowdays, so this should be enough to make them move on to  easier pickings by using a physical deterent that they cannot quickly overcome. You can see that they cannot  remove this Big Boy quickly....................