2.0ml Screw Cap Tube,Knurl,Skirted,Natural, E-Beam Sterile tube w/ attached cap: Capacity (Metric) 2 mL: Material: Ultra Clear 100% Virgin Polypropylene (Tube and Cap), Ethylene Propylene Rubber Diene Monomer (O-ring) Packaging: 500 x pk, 10 pk x cs, 5000 x cs. Single Bagged. ZipLock bag. Clean Claims