BD Nano Ultra-Fine Nano Pen Needles 4mm x 32 Gauge, 100/boxBD 320122 Nano Ultra Fine Nano Pen Needles 4mm x 32 Gauge are high precision insulin pen needles thoughtfully designed to minimize pain upon injection to give diabetics an unparalleled level of comfort. With their state of the art ultrafine 6 bevel Tip minimizes the puncture experience by streaming the insulin directly into the sweet spot and internal anti coring feature results in temporary lessening hypoglycemic events related pain. These resistant