Science enthusiasts, bug collectors, and nature lovers - this 12-pack of glass vials is exactly what you need for your specimen collection! Made from thickened borosilicate glass, these bottles are much more durable than regular glass and resistant to breaking if accidentally dropped. Each vial holds 30ml (about 1 ounce) and measures approximately 27x82mm with a 16mm opening - perfect for insects, pollen samples, seeds, or small specimens. The PP screw caps with PE liners create an airtight seal that prevents leaks and keeps your samples protected. What's really impressive is the heat resistance - the glass can handle temperatures up to 600°C, though the plastic caps are only good to about 100°C. You can autoclave just the glass bottles for sterilization between uses. These are perfect for entomology projects, science fair displays, nature study, or organizing small collections. The clear glass lets you easily see what's inside without opening the container. Whether you're a serious collector cataloging insect species, a teacher setting up classroom science projects, or just someone who enjoys studying nature, these professional-grade vials make organizing and displaying specimens so much easier. They come neatly packaged in a box to prevent breakage during shipping. The reusable design is eco-friendly too - just clean and use again for different projects. Seriously, if you work with small specimens or samples, having a set of quality vials like these makes everything more organized and professional-looking!