Roc N Soc Hydraulic Drum ThroneNotes Hydraulic seat is difficult to push down but lifts properly and is fully functional Some rusting to metal hardware A Roc N Soc Hydraulic Drum Throne in Good condition! At Evolution Music, we attempt to highlight cosmetic defects (if any) by picturing every angle of every piece of gear so you know exactly what you are getting. We always picture any and all accessories too. What you see is what you will get so please check out the pictures!