Enhanced Mixing Efficiency: Crafted from 304 stainless steel, our protein powder stir ball boasts exceptional durability and rust resistance. With four varying diameters, this innovative design ensures swift and uniform mixing, preventing clumps in your shakes. Versatile Compatibility: This stainless steel mixing ball is compatible with a wide range of containers, including shake bottles, mixers, mason jars, and various cups with lids. Enjoy seamless blending of protein powders, salad dressings, milkshakes, juices, and coffees in any vessel of your choice. Effortless Maintenance: Cleaning our shaker balls is a breeze. Simply rinse them with water or toss them into the dishwasher for quick and convenient cleanup. Say goodbye to the hassle of scrubbing or intricate cleaning procedures. Transformative Utility: Elevate your drinking experience by converting any covered cup into a shake bottle with our versatile stir balls. Just place the balls inside your container, secure the lid, and shake vigorously for perfectly mixed beverages on the go. Superior Mixing Performance: Experience unparalleled mixing efficiency with our stainless steel stir ball. Its robust construction and multi-size design ensure thorough blending of powdered drinks without residue or clumps, delivering smooth and delicious results every time. Description: Introducing our protein powder stir ball, made of 304 stainless steel for anti-rust properties, strength, durability, and safety. Unlike standard shaker balls, ours come in four different diameters to ensure quick and even mixing without clumping. Compatible with various shake bottles, mixers, mason jars, and cups of all sizes. Ideal for blending protein powder, salad dressing, milkshakes, juice, coffee, and more. Easy to clean by rinsing or dishwasher safe. Transform any covered cup into a shaker bottle by simply adding these balls and shaking vigorously for a smooth blend every time. Item Name: Protein Shaker Ball Material: Stainless Steel Features: Enhanced Mixing Efficiency, Effortless Maintenance, Anti-rust Size Details: S, Diameter: 3.1cm/1.22" (Approx.) M, Diameter: 4.8cm/1.89" (Approx.) L, Diameter: 5.2cm/2.05" (Approx.) XL, Diameter: 5.5cm/2.17" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 5 x Protein Shaker Balls