The Benchmark Scientific Adapter Pack is designed for use with Z207-A rotors, accommodating 5ml tubes. This pack includes 2 adapters in each pack, providing a reliable solution for your lab needs. The adapters are precision-engineered to ensure a secure fit for the tubes, preventing any potential mishaps during centrifugation. With these adapters, you can optimize the versatility of your Z207-A rotors, enhancing the functionality of your centrifuge setup. Trust in Benchmark Scientific's reputation for quality and precision to meet your lab's demands seamlessly.