Needles are standard 18 gauge, and come attached and sterile in the package with the syringe as well. Needle tip comes with safety cover and should stay on at all times syringe is not being used. Easy glide plunger used for slowly applying liquids, drops at a time. Non-medical use such as applying spore solution to a slide, slowly ejecting liquid cultures, or even filling ink cartridges! Intervals of half a milliliter or CC are printed on the side for precise application.