Features: Made from ebony/cow bone material, offer superior resonance and durability. These pin will increase the responsiveness of the instrument, sustain and more punches. Looks beautiful on the guitar too. The string studs come in standard sizes and are suitable for most guitar types. For acoustics guitar, Perfect cutting design, simple installation, suitable for 6 & 12 String acoustics guitar. Great accessory for guitar enthusiasts, great replacement for your 6 & 12 strings acoustics guitar, making them a great gift for any guitar player. Specifications: White/Yellow Materials: Cow Bone Black Materials: Ebony Style: White Single/Black Single/Yellow Color Single/6Pcs White/6Pcs Black/6Pcs Yellow Color Single size: about 8x30mm/0.31x1.18inch Package Includes: 1pc/6pcs Guitar Bridge Pin note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.