Style:Plastic Test Tubes with Caps and Rack. Package including:50 pcs Test Tubes with Caps and 1 pack 50-hole test tube rack.. Size:test tubes size is 16 x 100mm.Capacity is 10ml.Test tube rack size is 9.9 x 4.4 x 2.6 inches. Color:clear. No need to worry if the powder gets wet or the liquid leaks out, each sample tube is equipped with a push cap and constructed with hard plastic wall, ensuring you a good seal. Test tubes with caps and rack is not only ideal for scientific experiments and storing beads,spices,liquids,seeds and more,but also can be used for mixing drinks to decorate Halloween,Christmas and scientific theme parties perfectly.