On Stage RS9050 Adjustable Amp/Mixer Stand Support arms have 5 easy line-it-up width adjustments. Top platform features an adjustable 5-position tilt clamp. 10 Single-space 19" rack is ideal for storing outboard gear, amps or signal processors. Locking casters allow for easy access around the project studio. Entire stand breaks down and folds flat for easy storage and travel.