It fits exactly 5 electric guitars/basses, leaving a small gap between them, so you need to be careful when putting them in and taking them out so they don't get hit. It can also be used for 4 electrics and 1 acoustic/classical in the end position, more than that seems difficult to me. With 3 or 4 guitars it is very comfortable. Quality-wise, the plastics are ok but as expected, over time they will definitely wear out.
Update: almost 5 years later, with heavy use and several transports, it remains in excellent condition! I'm changing my rating from 4 to 5 stars.