2017 QUADCO QS500 Unit has demo time. Newer condition. Fits 20-22ton Host Machine , 1 YEAR- 2000 HOUR WARRANTY APPLIED, 32" DIAMETER DRIVE ROLLER OPENING, 360 DEGREE OF ROTATION, DEMO TIME ONLY. NEWER CONDITION, OPTIMUM FLOW @ PRESSURE FOR HOST MACHINE - 79-85 GPM @2175 PSI,