Pictured above， the first ball (a phase)， light pink， 32MM in diameter， weighs about 30 grams。

Pictured above， the second ball (two stage)， rose red， 29MM in diameter， weighs about 40 grams， with a built-instainless steel ball (small).

Pictured above， the third ball (three stage)， rose red， 25MM in diameter， weighs about 50 grams， with a built-in stainless steel ball (large)