DescriptionWhen do some pretty basic experiments and this avoids the whole broken glass issue. The plastic test tubes with a tight fitting cap, no rough edges, they are water and air tight, have a good seal. Great for making scientist concoctions. Also can be used as birthday goody bag gifts.Features- Color: Transparent. - Material: Plastic. - Size: 9.50 x 2.00 x 1.50cm/ 3.73 x 0.79 x 0.59 inch. - The product is made of PP plastic material, safe, durable and sturdy. - The plastic test tubes are with accurate scale on its body, which is easy for you to read the accurate liquid volume. - You do not need to worry about liquid leaking because each screw is leakproof. - It not only can be used for school, scientific laboratory using, but also for holding small items. - Great choice for decorating Halloween Christamas festival, scientific themed kids birthday party supplies and decorate the house.