Musiclily Slotted Folk Acoustic Guitar Ebony Bridge Pins for Taylor Martin Guitar Replacement Parts, Black with White Pearl Shell Dot (Pack of 6) Fit to Martin,taylor or any most acoustic guitar Made by real ebony with white pearl dot on the head Pre-slotted,Top head size is 8mm diameter, bottom size is 3.4mm diameter Overall length is 30mm.Top White pearl dot is 3mm diameter Package included: 6 x guitar bridge pins