TAMA Drum Throne Ergo-Rider HT730S Height adjustment range: 425-550mm, a low-position model. Please check the TAMA HP for details. Used about 5 times for live performances, mostly used at home. There is some rust and dirt on the metal parts due to aging, but there are no tears in the seat or problems with the moving parts. This is a used item, so please consider purchasing only if you understand this.