Anatomical Raven skull ring
This is 5 (15.7mm) USA ring size chart
If you want chose another size pleas click on link below
SIZE 5(15.7mm)
SIZE 7(17.3mm)
SIZE 9(19.0mm)
SIZE 11(20.6mm)
SIZE 13(22.2mm)
Price depend from size
If you need specify size let me know in comment i will do it for you