Greenten 2 Pcs 6 String Electric Bone Nut Cattle Bone Slotted Replacement (42 X 3.5, Unbleached) 100% Brand New,Flat Bottom,PLEASE NOTE THE SIZE High quality string nut real bone,High quality sound and volume Size:42 X 3.5 X 4.5/3.5mm(1.653 X 0.137 X 0.177/0.137 inch) Designed for modern and vintage electric guitars and found,We have checked the product carefully Nut has pre cut string slots and requires very little experience to install.