The McKesson Tube Closure Polyethylene Snap Cap is an essential laboratory accessory for secure and convenient storage and transportation of samples and reagents. Crafted from durable and chemically resistant natural polyethylene, this universal 12 mm / 13/16" size fits most 12mm tubes. Its leak-proof design ensures a tight closure, protecting contents from contamination and leakage. The snap-on closure allows for quick and easy sealing, saving time and effort. Ideal for various applications in medical and research labs, including sample storage, chemical containment, and equipment protection, this versatile tube closure provides a secure and reliable solution for laboratory needs. Its pack of 1000 ensures a sufficient supply for diverse laboratory operations.