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MATERIAL:Made of 304 Stainless steel,rust resistance and strong antibacterial ability，healthy 。Won't destroy your cup.
USES:With shaker bottle/cup, makes your nutrition dissolve more totally and quickly.
VALUE PACK: Package included: 6 Pcs plastic blender ball, it's the best value pack.
SMALL SIZE: Fit most bottles. Compatible with most sized cup or bottle allowing blend protein powders conveniently.
FUNCTION:Makes your drink uniformly and taste more good.
Mixing Ball Stainless Steel 6pcs - B07966F36D