Autoclavable polypropylene (PP). Excellent rack for benchtop use or freezer storage. Eight color options for sample and benchtop organization., Reversible Tube Rack, 80 Places for 1.5mL/2mL Microtubes; 60 Places for 0.5mL/0.2mL Microtubes, 9" x 2.6" x 1", Green, 5/pk