This is a TOMBO HH-800 harmonica holder. It's made of metal, spring-loaded, and has an adjustable angle. It's apparently a model supervised by Tsuyoshi Nagabuchi. I've been using a different model from about 40 years ago, so I bought this as a replacement. However, I didn't end up using it much, and I haven't been playing the harmonica much lately, so I'm putting it up for sale. - Brand: TOMBO - Model: HH-800 - Type: Harmonica Holder - Material: Metal - Features: Spring-loaded, Adjustable Angle Thank you for looking.