Phillips screw heads...My God! What has the world come to? Only Allen Key bolts will do, preferably M7...maybe make a hidden (lost) Allen Key too...one that falls down and becomes entangled into the cables whenever the unit is expanded - just like reality.
The surface of a rack spacers should be slightly tarnished and faintly reflect the perfect studio that we aspire to but will sadly never own.
Have a great day : )