YAMAHA Drum Throne DS550U Body + Instruction Manual Purchased 3 years ago, but used for about half a year. There are white spots (see photo 3) that don't appear to be rust on the stainless steel parts, as well as scratches and dirt from storage, but it is still usable. Features This is an entry-level drum stool that inherits the stability, durability, and operability from higher-end models. Specifications ■ Drum Throne ■ Seat Size: Round Seat (294mm diameter) ■ Seat Height: 37-55cm ■ Leg Shape: 3 legs (single structure) ■ Height Adjustment: Clamp rod system (without holes / with memory clamp)