NovoFine® Autocover® is a simple to use screw-on needle with an automatic safety shield feature. NovoFine® Autocover® needles are suitable for all ages and all weights. The weight and age of the individual and the site of injection affect the injection technique # see the simple injection guidelines. NovoFine® Autocover® needles are sterile and for single use only. Once the needle has been used, the safety lock indicator turns red to indicate that the shield is now locked Sterility is guaranteed if needle seal is unbroken Re-use can lead to needle breakage, can cause lipohypertrophy, and increase pain.