Regarding the installation, I really was not serene the idea to shift all my weight on the door jambs, so I fixed directly into a concrete beam with fasteners I acquired in parallel (this is a story of four or five euros in any DIY store).
Another small point well thought out, at the end of the installation manual, some exercises / advice we are given according to what one seeks to work (abs, back, biceps ...). It's stupid, but it helps to start well for beginners (I am!).
As for the use, no complaints, foams hand are a contribution, and the bar appears perfectly resistant. That's the main thing, and therefore can only recommend this product for anyone looking to do a little good in different parts of their body! It's simple, not too expensive, robust, not ugly, short, perfect!