1.Quantity:10pcs.Material:made of 304 food grade stainless steel, durable and healthy.
2.Uses:with shaker bottle/cup, makes your nutrition dissolve more totally and quickly.
3.For most bottles:suitable for most of bottles with cover.Put the stainless shaker ball into the bottle and cover, then shake it uniformly.
4.Function:makes your drink uniformly and taste more good.
5.Size is suitable for not only shaker bottles, but also other bottles with cover.Just put this ball in and shake the bottle!They're just the right size and easy to clean. The products are easy to use.