All Monoject insulin syringes are individually wrapped to ensure that they are 100% sterile until opened. The syringes are latex-free and offer silicone lubricated barrels which allows for a smooth and clean injection. The needles used with these syringes feature an Ultra Comfort, tri-beveled point which produces a consistent and sharp needle for maximum comfort. These high-quality insulin syringes are disposable and should only be used one time and then discarded. If you have any questions regarding these products before purchasing, please contact us for further assistance. We are always happy to answer any questions you may have pertaining to the products we offer. Please note that you are should always consult your healthcare provider before using this type of product to ensure it’s the best option for your needs.