6# Diameter:16.5mm

7# Diameter:17.3mm

8# Diameter:18.1mm

9# Diameter:18.9mm

10# Diameter:19.8mm

Quantity:1 PC

Please Note: All Weights and size are approximate.

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Please avoid using sharp objects to scratch the surface;

It is recommended to take a bath， sleep， please do not wear;

Pay attention to maintenance!