These are new and unused nuts. The stated sizes are: 38 x 3.5 x 6.0 (mm) x 3 43 x 3.5 x 6.5 (mm) x 3 They are sold as being for Jazz Bass and Precision Bass, but please be sure to check the sizes before purchasing. This is a set of 6 pieces, 3 of each size. I cannot determine if it is cow bone, but it is a bone nut, so it is recommended for those looking for bone material. This listing includes shipping, so please purchase as soon as possible. No discounts will be offered. Individual sales are listed separately. Other guitar-related items are also listed at low prices. These are technically pre-slotted nuts, but whether the slots are suitable will depend on each individual instrument. They may be listed or unlisted depending on stock availability, so those who wish to purchase should do so quickly. ↓Guitar and instrument listings here #アパッチ楽器類