DW Airlift drum thrones are reliable and rock solid, with some added luxury. Most notably, The DW 9120AL's pneumatic lift system lets you make effortless adjustments to seat height in an instant. The new Quad-leg folding base resists toppling in any direction. Like the 9120M, the DW 9120AL Airlift drum throne's oversized tractor seat with thick foam padding cradles your spine and legs for those extra-long gigs. Backrest sold separately.