I purchased 1 rack just to try them out. I quickly ordered 2 more after seeing the convenience of having my tools organized. I didn't attach the the shelves or the other attachments because I didn't need them. The overall construction however is a bit weak if your hanging heavier drills. I ended up adding 2 more attachmentment screws with fender washers and the seemed to bolster the rack better. The convenience of having my tools at easy reach, organized and readly accessible makes this a must have in my shop.i highly recommend this system.
Gary Evans
Master Electrician
Backstage Electric Inc