Ergonomic Safety Handle Provides Balance and Support for Sitting or Standing Motion Fully Adjustable Height and Length Tray Height from 26 to 32, Handle Height from 34 to 40, Base Length from 20 to 36 Swivel Tray Multi-Use Tray Pivots out of the way when not in use Super Grip Rubber Pads Ensure Stability and protect your floor from damage Quick and Easy Assembly No tools required