Autoclavable polypropylene (PP). Excellent rack for benchtop use or freezer storage. Eight color options for sample and benchtop organization., Reversible Tube Rack, 96 Places for 1.5mL/2mL Microtubes; 96 Places for 0.5mL/0.2mL Microtubes, with Translucent Cover, 9" x 2.6" x 1", Blue, 5/pk