Clean Any Size or Shape: Our set of 10 brushes includes various diameters from 1/16 to 1 inch, making it easy to clean any bottle, straw, or tube. Durable and Safe: Made of food-grade stainless steel and nylon bristles, our brushes are built to last and won't scratch or damage your items. Easy to Use: Our brushes generate foam easily and are hard enough to scrub away dirt and grime, yet gentle enough to avoid scratching delicate surfaces. Multipurpose: Perfect for cleaning reusable straws, funnel necks, tubes, cylinders, and other hard-to-reach corners. Save Time and Money: With our 10-piece set, you'll have the right brush for any cleaning job, saving you time and money on expensive cleaning products.