[Product material]: raw material environmental protection copper surface electroplating gold treatment high quality not easy to change color inlaid zircon-Zircon 

[Product packaging]: independent pp bag anti-oxidation, without packaging box 

[Size]:

US code ring No.5: the corresponding finger circumference is about 5cm (port code 10-11 is equal to counter number) 

US code ring No.6: the corresponding finger circumference is about 5.2 cm (port code 12-13 is equal to counter number) 

US code ring No.7: the corresponding finger circumference is about 5.4 cm (port code 14-15 is equal to counter number) 

US code ring No.8: the corresponding finger circumference is about 5.6 cm (port code 16-17 is equal to counter number)

US code ring No.9: the corresponding finger circumference is about 5.9 cm (port code 18-19 is equal to counter number) 

（ Due to the deviation data of each person's measurement, it can fluctuate up and down about 2mm）