Material: Natural cow bone (Unbleached)
Standard size fit for most brand guitar.
Size: 
Total length: 28mm 
Head diameter: 7.8mm
Collar diameter: 5.3mm 
Bottom diameter: 4.2mm
Shank length: 21.1mm 
String slot: 2mm
3° Taper

Package includes:
6x Guitar Bone Bridge Pin w/ abalone shell dot
1x Pin puller