Size: 40mm X 45mm (1.57″X 1.77″), suitable for smart shake bottle cup shaker.
Material: 304 Stainless Steel blender ball, perfect for mixture of your protein shakes.
Use for cup shaker, safe and environmentally friendly, reusable.
Easy to use and carry, ensures you drink your nutrition drinks throughout the day.
Quantity: 8 Pack of Replacement Steel Wire Mixing Whisk Blender Balls.