Becton Dickinson Magni-Guide Device works as both an insulin syringe scale magnifier and a needle guide. Designed to offer both dexterity benefits (for those who need help stabilizing the syringe and insulin vial while injecting) and magnification benefits (for those who need help reading the scale on the syringe). The insulin vial snaps onto the end, and a groove in the device allows the needle to be easily guided into the vial stopper. The device not only helps you hold the syringe and the vial together, but also magnifies the syringe scale 1.7 times for easier reading. Fits both 1/2-cc and 1.0-cc syringes.