Features: Easy to use: Just add ingredients and shake the ball in the bottle or shaker cup and shake vigorously to mix the ingredients. Easy to carry: The shaker ball is small and lightweight, making it easy to carry and mix drinks anytime, anywhere at the gym, office or while traveling. Sturdy material: The rocking ball is made of 304 stainless steel, which is sturdy and can be cleaned directly with water for long-lasting use. Versatility: Not limited to protein shakes, the shaker balls can also be used to mix other drinks. Excellent workmanship: This rocking ball has excellent workmanship and excellent material, which can give you a good user experience. Notice: *Actual color may be slightly different from the image due to different light effects *Please allow 1-3 cm deviation due to manual measurement Description: Material: 304 stainless steel Size: Diameter: 50 mm