material: 316 titanium

 size: all

5 yards (for normal with No. 10.11 girls) internal diameter of about 1.55CMlength 5CM

6 yards (for normal with 12 No. 13 girls) internal diameter of about 1.65CMlength 5.3CM

7 yards (for normal with 17 boys or girls No. 14, No. 15) is about 1.75CM in diameter, perimeter around 5.45CM

8 yards (usually with No. 18 for boys) internal diameter of about 1.85CMlength 5.7CM

9 yards (for normal with 19 No. 20 boys) internal diameter of about 1.9CMlength 5.95CM

10 yards (for normal with 21 No. 22 boys) internal diameter of about 2CMlength 6.2CM

Wu Chun and the star of the love the workmanship and quality are the best

Is rotatable Oh a Rome grain ring is very special

Add a chain when the chain is also a good choice