I replaced the chin rest on the viola I purchased (around 1 million yen) because it didn't fit, so it has been used very little and is in very good condition. I don't know what level of product it is. It's made of wood, and the part that touches the instrument seems to be cork. There are a few minor scratches on the cork, but it doesn't seem to affect its use. The total length is just under 15cm, and the height of the black part is about 2cm. The metal part is like a screw, so it seems the height can be adjusted.