100% Satisfaction guaranteed: If you have any further questions about our ear thermometer lens filters. Contact us anytime will get you the best solution. Very Safety: Our ear thermometer covers are 0% BPA, 0% latex and are 100% recyclable, all people including babies, infants can trust and use with confidence. Hygienic - our disposable caps minimise the risk of transferring germs and contamination. For optimal hygiene and accurate readings, the lens filters must be replaced after each use. Reliable & Accurate: These lens filters cover the tip of the ear thermometers, making it easy to avoid spreading germs & to avoid earwax buildup that can cause inaccurate readings. For all Braun Thermometer Models: The ear thermometer covers are compatible for all Braun Thermometer models including ExactempThermometer 7 IRT 6520, IRT6020, IRT6500, Braun Thermometer 3 IRT3030, IRT3020, IRT4020, IRT4520 and so on.