This product is laboratory sample bottles, made of materials, so it can serve you for a long time. High-end materials can ensure its durability and practicality. Very suitable for use in laboratories, chemistry rooms, schools and so on. Features - ColorTransparent - Material: PET. - Size: 2.00X2.00X4.50cm/0.79X0.79X1.77 inch. - Capacity: 5ml. - Made of high grade material, for your safe and using. - Precision molded for consistent wall thickness and smooth interior and exterior surfaces. - Hold your laboratory using water etc without any leaks and are sealed in. - Applicable to a variety of scenes, such as laboratory, school, and more. - The bottom of the product is smooth and placed smoothly. Package list: 30 x reagent bottles Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!