The bridge pins of the guitar can secure the strings tightly and add clarity, tone, sustain, and volume to your acoustic guitar. You can choose different colors to create a personalized combination and enhance the appearance of your bridge. - Material: Copper - Color: Silver tone - Head Length x Diameter: 29 x 8mm - Buckle installation diameter: 5mm - Increases clarity, sustain, and brightness of tone - Ideal for acoustic guitars with excessive bass - Easy to insert and remove with pronounced neck - Check the size before buying