Comfort, stability and affordability are the main features of the DW 5000 Series Thrones. The 5100 standard height throne has a specially molded 13" Round Top that is 3" thick. The throne features a Solid Ear Casting with Oversized Locking Nut and full-sized 1 1/8" Double-Braced Base. The throne features a Swivel Height Adjustment, adjustable from 21 to 29 inches