How to fit a bone saddle and nut. Why fit a bone saddle and nut on an acoustic guitar? - YouTube
Amazon.com: 1 Set of 12 String Real Bone Slotted Saddle Nut Acoustic Guitar Parts : Musical Instruments
Amazon.com: Guitar Bone Nut and Saddle Set - 6 String Acoustic Guitar Bone Bridge Saddle and Nut Made of Real Bone for Acoustic Folk Guitar : Musical Instruments