• You will receive 10 test tubes with 10 natural corks. • Made with high-quality materials, safe and non-toxic. • High transparency to easily observe the interior. • Lightweight, easy to transport, and high hardness. • Cork facilitates opening and closing, preventing leaks. • Washable to keep clean and reusable. • Ideal for birthday decoration, celebrations, and parties. • You can personalize them with name tags or text.