Black drum stool made by YAMAHA. Originally, the height is adjustable, but the pipes are interfering inside, so the height cannot be changed from 55cm. I (174cm tall, prefer a higher position) have never adjusted it, so it might be just the right size for someone who prefers that height, but please be aware of this. Also, it's old, so there are some rust and stains here and there. Please understand this before purchasing. Thank you for looking.