• Small size: less than 3.5" ,greater variety , higher quality and more reasonable price,
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  Middle size: 3.5"--12" e.g. 3.5", 4.0", 4.3", 5.0", 5.7", 7.0", 8.0",8.4", 8.5", 9.0" ,10.2" and so on and customer's design are available
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  Large size: more than 12".We can research and develop according to your request.