★?material: 316?titanium?/?Obsidian?/?purple?sand

★?size: width?0.8CM

There are 7 yards，?8 yards，?9 yards，?10 yards

Boys generally?take?8 yards

7 yards，?the inner?diameter of about 1.75CM，?length?5.45CM

8 yards，?the inner?diameter of about 1.85CM，?length?5.7CM

9 yards，?the inner?diameter of about 1.9CM，?length?5.95CM

10 yards，?the inner?diameter of about 2CM，?length?6.2CM

The?titanium，?the kind of?texture is very good，?with?the?two?stones，?purplesand?material?is very good-looking，?like?the stars in the sky

There?are?also?other?cheap edition，?but the quality is?not?good

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