Are you looking for a professional, yet flask? Are you in search of a sturdy, trustworthy tool that can help you exercise chemical research ? , ! Our professional flask must meet you needs. It is one of the for you. Features - Color: Transparent. - Material: PP. - Size: 3.3X6.5X10.3CM/1.3X2.6X4.1in; 3.3X8.5X14cm/1.3X3.3X5.5in; 4.8X10.4X17/1.9X4.1X6.7in. - Capacity: 100/250/500ml. - The flask is made of good material for durable and use. - Clear and accurate graduation, easy for you to look when doing experiment. - Suitable for beginners or professional use, also the students. Lightweight and portable, it is very convenient for you to carry. - A good tool for science study, can exercise various chemical experiments. - It is a good choice as a gift for your kids at school if they do experiments in laboratory. Package list: 9 x Flasks with Lids