adjustment To adjust seat height, turn stool seat clockwise to lower the height and counter clockwise to raise the height. « Smooth screw height adjustment. + Solid steal craw shaft. + 1" Chrome plated steel tubular construction. > 14" Seat diameter. « 4" Thick padded seat (black). + Four hooded casters. lifetime limited warranty Your Drive brand product is warranted to be free of defects in materials and workmanship for the lifetime of the original consumer purchaser.