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By certification 
Material: TPR
Color : complexion
Feature：Smooth, comfortable, waterproof, low noise, high quality non-toxic TPR material.High frequency simulation finding 12 swing vibration
Size:TL:18cm,L:15cm,DIA:4cm。
L:4.2cm,DIA:4cm(balanus)
Weight：187g
USD/PCS:
US$4.2-6.3.
