RANMEI Aluminum Test Tube Holder Rack 40 Hole 3 Layer for 18.5-22.5mm Tubes

Feature *Made of Aluminum durable and light weight easy to carry. *Highly polished surface no edges and sharps chemical and corrosion resistant. *Fit for 18.5 to 22.5mm test tubes round holes hold 40 tubes. Note: Please check the diameter and height of your tubes before ordering. *Economical and space-saving rack for applications in lab or at home. *3 Layer 2 slots each layer has a direction slide the shelves in from one side the other side has a lip that stops it fits very snug. Specification Name: Test tube rack Material: Aluminum Number of holes: 40 holes Aperture: 18.5mm 20.5mm 22.5mm (optional) Allowable error: 1mm Packing list: 1*Test tube rack