About this item Triple-Tier Alignment: three-level structural design secures test tubes in precise vertical orientation for organized sample handling and mechanical protection during bench-top procedures Capacity & Bore Sizes: available in 13 mm (50 holes), 16 mm (50 holes), and 18 mm (40 holes) for secure friction-fit placement of common tube diameters Material & Footprint: fabricated from 2 mm gauge rigid polymer; available footprints 210 × 103 × 63 mm or 250 × 113 × 65 mm with a low center-of-gravity layout to enhance bench stability Modular Assembly: detachable interlocking panel system for rapid assembly/disassembly, compact storage, and streamlined decontamination workflows in high-throughput laboratory environments Warranty & Support: 1-year limited manufacturer warranty covering structural integrity and transit-related defects; manufacturer technical support provided for warranty claims