<b>Specification:</b><br> 1:Accommodate 0.5mL, 1.5mL, and 2mL centrifuge tubes or PCR tubes and 1.8ml cryotubes. <br> 2:Each side contains 12 x 5 configurations and are used for freezing, storage, transport, and general benchtop use.<br> 3:They are autoclavable at 250 degrees F and 15psi for 15 minutes.<br> 4:The racks are 9" long, 2-1/16" deep, and have a 10.5mm well diameter.<br> 5: Five assorted colors.<br>