Get your replacement parts straight from the source. This 4-pack of Martin Angled Bottom Bone Nuts is perfect for smaller repair jobs or personal setups. Made from the same high-quality bone used in many Nazareth-built Martins, each nut enhances sustain, improves tuning stability, and delivers a rich, balanced tone. The angled bottom design ensures optimal string contact and helps reduce buzzing on the lower strings. Martin Genuine Parts are compatible replacements for your guitar. However, due to the age of your instrument, they may not be exact replicas of the original components. For any repair work, it is recommended that you take your instrument to an Authorized Service Center. Independent or unauthorized service may void your instrument warranty.