Sterile CryoCLEAR Vials, 5mL, Internal Thread, TPE Seal, CryoCLEAR vials, 5.0mL, Sterile, Internal Threads, Attached Screw Cap with Co-Molded glass vial caps supplierplastic Elastomer (TPE) Sealing Layer, Round Bottom, Printed Graduations, Writing Space and Barcode, 50/Bag, 10 Bags/Case.