Check the listing for details. Cattle Bone Slotted Saddle and Nut For 12 String Acoustic Guitar Easy to Install. Color: White, Condition: New. Listed at 12.99 USD. Quantity: One set Color: White Material: Cattle Bone Size: Upper piano pillow: 48 * 6 * 9mm (length * width * height) Lower piano pillow: 76 * 2.9 * 13mm (length * thickness * width) Features: 1. Made from genuine natural Cattle Bone, we provide you with better sound quality and longer lifespan than plastic. 2. Improving guitar sound quality: This true bone has high density and minimal porosity, which can produce good pitch and clarity. 3. Very suitable for classical guitar. It can effectively improve sound quality and prolong the duration. 4. Easy to install: With a lightweight design and exquisite appearance, our bone guitar has pre cut chord slots on the top pillow, making it easy to use.; Explanation: Some polishing may be required to adapt to the width of the neck. On Feb 23, 2024 at 18:24:27 PST, seller added the following information: