✓?Best Customer Service?If any problem comes to you, feel free to contact our customer service, we will try our best to solve it. ✓?For Various Types of Digital Thermometer Models?These ear thermometer caps are suitable to be used on many types Thermometers, including Exactemp 7 IRT 6520,IRT6020, IRT6500, 3 IRT3030, IRT3020, IRT4020, IRT4520 and so on. Inside bottom diameter is 1.5 cm, probe cap length is 2 cm, please measure the ear thermometer before purchg. ✓?Hygienic?Disposable thermometer caps reduce the risk of transferring germs and contamination. For optimal hygiene and accurate readings, the ear thermometer probe covers must be replaced after using for everytime. We will suggest having several thermometer covers for daily emergency epidemic prevention. ✓?Highly Accurate?These thermometer caps will protect tympanic thermometer from scratching and other impurities, which might affect temperature readings.The ENJSD probe covers for ear thermometer can be used as replacements for various ear thermometers, don't worry about the accuration after putting the refill caps. ✓?Recyclable & Disposable?The Thermometer covers are 0% BPA, 0% latex and 100% recyclable, it is hygienic one for one times. It will grateful that leave your ear thermometer model which is suitable for this ear thermometer covers under QA and comment, it will much more helpful for other buyers.Thanks a lot.