The DW 9100 Standard Round Seat Drum Throne offers a full 14" circular top that is made from a special combination of foam for stability and comfort. The drum throne is equipped with DWs newly-designed double-locking clamp, vise lock seat clamp, and an oversized 1-1/4" base for added stability. Features:14" round topSpecial combination of foam for stability and comfortNewly-designed double-locking clampVise lock seat clampOversized 1-1/4" base for added stability