Table top can be raised or lowered in infinite positions between 28"- 45". H-style base provides security and stability. Tabletop can be raised with slightest upward pressure and locks securely when height adjustment handle is released. Base and mast are available in chrome or silver vein finishes. For proper assembly, do not remove screw below collar on base shaft until completely assembled. 2" swivel casters allow for easy maneuverability