• Air cylinder for easy height adjustment
• Five 2.5" casters for ease of mobility
• Cushioned black vinyl cover
• Large, reinforced 15.25" diameter 1" deep tool tray
• Individual replacement casters available: Part # SUU-RS8509WH (includes 1 caster, 1 nut & 1 lock washer)
• Seat Diameter: 12.5in
• High Height: 20.5in
• Low Height: 15.5in