What a great piece of kit. It is so easy to use and a lot lighter to carry than levelling blocks. I levelled my caravan in less than 5 mins and the whole process was stress free. No more aching back for me! Customer service was excellent – Derek went out of his way and made a special journey to the Post Office to catch the post so that I could have the lock and level before my holiday – shame that all retailers don’t treat their customers in the same way.