The continuous thread finish creates a tight seal with various screw thread closures. Capacities range from ¼ dram (1 ml) to 11 drams (40 ml). Clear borosilicate vials provide maximum visibility and assures the integrity of the contents while amber and blue glass vials provide excellent UV protection. Various screw thread closures are available and sold separately. All stock products are available for immediate delivery. Screw Thread Vials are ideal for packaging liquid or dry products.