The Bio Plas 0061 microcentrifuge PCR tube rack set includes five microcentrifuge/PCR tube racks that accommodate 0.5mL, 1.2mL, and 2.0mL tubes. The racks have a 16 x 5 configuration and are used for freezing, storage, transport, and general benchtop use. They are autoclavable at 250 degrees F and 15psi for 15 minutes. The racks are 9" long, 2-1/16" deep, and have a 10.5mm well diameter. The set includes five trays in assorted colors.