6 Pack of Wire Mixing Whisk Balls Replacement. 1.Put the ball in your bottle without buying any expensive protein shake bottle to convert any thermos,wide mouth bottle,sports bottle or mason jar into blender bottle for mixing drinks. 2.Add your ingredients,drop in the bottle and shake.The whisk ball moves freely inside the bottle as you shake,mixing even the thickest ingredients with ease. 3.Perfect for protein shakes:smoothies,whey powders,pancake,batter,vegan,protein powders,fiber drinks,green tea powder,dressings and meal replacements. Package Includes: 6 * whisk balls
