Blisstime 6 String Acoustic Guitar Bone Bridge Saddle and Nut and 6pcs Guitar Bone Bridge Pins Made of Real Bone Bone nut size:43mmX6mmX8.5mm Bone saddle size:72mmX3mmx9mm 6pcs Guitar Bone Bridge Pins:Length:30.8mm/1.21inch;Diameter of the head:7.6mm/0.31";Skirt /collar : 5.33mm/0.21";End of post: 3.4mm/0.13"; Length of post: 23.7mm/0.93";Dot's dimension: 3.2mm/0.13" Made of real cattle bone, which can offer a better tone than plastic. Package include:6pcs Guitar Bone Bridge Pins+1 pcs pcs Folk Guitar bone nut ( 43mmX6mmX8.5mm)+1 pcs Folk Guitar bone saddle(72mmX3mmx9mm)