Our smoothest hand-crank adjustment, with the highest weight-lifting capacity, sit-to-stand functionality and a discreet fold-away crank. Used in universities, non-profits, public service, healthcare and for corporate and industrial ergonomics. Meets and exceeds ADA requirements and adheres to Human Factor Ergonomic Standards. Adjusts from 27"-39". Hand-crank actuated 5 turns per inch, hydraulic driven system. Base finish Graphite Silver. 500 lb load capacity. Lead time 15 days.