This is a set of 5 koma (bridges) for shamisen, used in jiuta (local songs) and other genres. They are all made of lead. The grooves are shallow, suggesting they can be used for a long time. The heights vary from 2.7 to 3.0. Suitable for collections, spares, etc. The darker koma in the front has a faint marking. It seems like it can be removed easily, but please polish it yourself after purchase. Water buffalo koma