Tisch Scientific Vial Rack for 4 mL Vials, Blue Polypropylene, 9.25" x 4.5" x 1.125", 50 Holes, Hole Diameter: 15 mm, Hole Depth: 22 mm, Non-Autoclavable, 1 Pack, CV2056. Tisch 4mL vial racks are designed for use in laboratories, medical settings, research and more. Vial racks are made from industry-standard polypropylene plastic and hold up to