it is practical, withstands 20 glasses indicated by cons to fix under a shelf must use cunning because it binds only to the wall or cupboard background provided that it is strong enough, so with washers and screws it takes a little flat after all with the weight of the glasses must also fix it on the front to the top shelf as it slumps and if they put the glasses underneath they touch. The medium itself is of good quality, I recommend this product, I think even in the future by ordering a second knowing how to install it
