The operation of this lock is indeed simple, but serves the purpose and has a high deterrent effect. Very simple and quick installation is possible. 2 star deduction there, because this lock can not be mounted on each wheel. With my Octavia 5E the midsection airbag horn button of the steering wheel is designed so that at Mounting the barrier, the horn is triggered. I think that would have to be mentioned in the product description, so the deduction. I am, after all, remained seated on 2x shipping.