You can existing throne or seat by changing the legs to one of the 1st Chair individual throne bases. You can choose from the standard Trio tripod base, the Trio Low for lower positioning, and the four-leg Quartet for maximum stability (diameter of upper rods: 22.2mm). And now the new easy-to-adjust Hydraulix base is available. The Hydraulix throne base comes with a seat holder with an adjustment lever.

HSB4N : Quartet