Fast delivery as usual but without packaging! everyone does not have to know what is in the package !.
Mounting: Fixing foot with cap nuts is very aesthetical but the screws are long trops! provide for normal nuts or shorten the screws! For fixing kneepads provide a tap M6 threaded holes are somewhat obstructed by point welds and finally some rough edges on the tubes or roll the rollers of the trolley and hop a little bit of lime.
Regarding the operation no worries works well at the beginning to 5 minutes is impossible although it feels the work of abs! if you have small back problems abstain.
In summary it works well but the quality is very bad!