Polyurethane ESD Tractor Sit-Stand Medium Bench Height Stool in Chrome is adjustable from 20-28 inches from the top of the seat to the floor and features electro-static dissipating components to ensure proper grounding with ergonomic adjustments such as seat height and locking seat tilt and cast-aluminum base with stationary, non-marring ESD glides suitable for hard floors in chemical, soil, and puncture resistant polyurethane.