Description This insulin vial cap protector features a precision leak-proof design and dust-proof vial covers, fitting glass vials snugly to keep medication safe and uncontaminated. Perfect for insulin bottle protection in clinical, laboratory, and travel settings, the lab vial cap offers quick organization, reliable sealing, and easy replacement for your glass vial needs. Features -Color:Multi -Material:TPU -Size:2.00X2.00X1.00cm/0.79X0.79X0.39in -Leakproof design: our vial caps for glass vials feature a reliable leakproof seal, securely locking liquids inside and preventing insulin or other medications from spilling during storage or travel -Effective dust protection: these dustproof vial covers shield your insulin bottles and small glass vials from contaminants, keeping medications safe and free from outside particles -Perfect glass vial fit: designed specifically as vial caps for small glass bottles, they offer a proper fit on most 3 ml insulin bottles and lab vials, boosting safety for clinical and laboratory use -Easy replacement: the replacement lids for glass bottles can be quickly swapped, making it convenient to replace lost or damaged glass vial sealing caps without hassle -Multipurpose utility: ideal for research labs, clinics, and home use, these reusable vial caps serve as protective flexible vial caps, suitable for chemical and medical storage needsPackage list: 12 x glass bottle caps