Featuring an easy-to-hold ergonomic design, these racks offer user-friendly handling. Each hole is molded with numbers and letters, simplifying sample identification. The racks are designed to be stackable, whether they are empty or full, optimizing storage efficiency. Additionally, they allow for easy removal and insertion of tubes, streamlining laboratory processes. These racks are compatible with both 1.5 ml and 2.0 ml Micro Centrifuge Tubes, providing versatility for various applications.