Presenting the smallest of our mixing coils, the 4" Shaker Snake Mini (nick-named "The Rattler" for good reason), which is perfectly designed to fit most 6" baby bottles. Why, the Mini? Because if you've ever tried to mix baby formula and water, you know why! Like all our mixing coils, The Rattler is crafted from 316 Food Grade Stainless Steel, so you know it's safe for your little one, whether they have two legs or four. Yep, that's right, you can also use The Rattler for mixing up animal formula as well, making it a snap to mix up a rich, delicious blend of yummy for whatever you're feeding. The Rattler mixing coil measures 1.00" at the base, 1.00" across the top, and is 4" long.