The test tube organizer features a user-friendly design that allows for quick placement and removal of tubes. Its stable base ensuring safety during use, while the transparent construction makes it easy to monitor the contents. Features -Color:Transparent -Material:Acrylic -Size:13.50X9.00X5.50cm/5.31X3.54X2.16in -Hole: 16mm -Optimized space utilization: dual-layer significantly increases storage capacity, making it an essential tool for organized laboratory setups -Quick sample identification: transparent construction provides clear visibility, allowing users to locate and access samples without delay -Secure tube placement: remain upright and stable, reducing the risk of spills or contamination during experiments -Wide compatibility: suitable for a variety of scientific applications, including chemistry and biology, making it versatile addition to any lab -Easy to clean: ensuring the Test Tube Rack remains in pristine condition with minimal effort Package list: 4 test tube stands