Vial Labels found in: JetTAG Cryo Ink-Jet Labels, Standard Opening Screw Thread Vials, Cryo-Lazr-Tag Cryogenic Laser Labels for Vial Tops, 0.433".. Cryogenic dot labels are ideal for labeling 0.2ml PCR tube tops, 0.2ml PCR tube caps, 0.2ml PCR tubes, 0.2ml PCR vial caps. caps.