Lot of 10 - Clear Glass Specimen Vials with Black Caps (1-3/4 Inch X 9/16 Inch) Bottles are clear glass, with black plastic screw-on caps They are an excellent way to display gem stones or other small items Great for use in the science lab for samples or specimens - these vials come in a set of 10 pieces Can be used in the classroom for instruction in entomology, and collecting specimens in the field