Bd Autoshield DuoThe BD AutoShield Duo is a safety pen needle used with insulin injection pens for people with diabetes. It is designed by Becton Dickinson (BD) to make injections safer, easier, and less stressful by hiding and protecting the needle before and after use. What It Is The BD AutoShield Duo is a single use insulin pen needle that features a dual safety shield system: One shield covers the needle before injection A second shield automatically covers the