Performance: Ebony (ebony) hard texture, ebony string nails produce strong, macro volume, long after tone, quality, to improve the sound quality and volume of splint piano, single board piano, single board piano has a significant effect. Natural abalone shells and copper ring inlays look very 36pcs bridge pins for acoustic guitar Made of ebony and with green abalone dot and brass circle on the head Beautiful abalone dot inside, and brass circle outside Easy to replace your lost or broken bridge pins and enhance your guitar's appearance Main color: Black Material: ebony + copper ring + abalone shellfish Length: . 30mm Specifications: bayonet diameter 5.33MM package included: 36 x Bridge pins for acoustic guitar Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.