BD Micro-Fine+ pen needles are precision-engineered insulin pen needles designed for comfortable and effective insulin delivery. These 31G needles measure 6mm in length and come in a box of 100 pieces, featuring advanced technology for minimized injection discomfort. The needles have a gauge size of 31G (0.25mm diameter) and a length of 6mm, making them suitable for subcutaneous insulin injection. Each needle is sterile and intended for single use only. The universal design ensures compatibility with most insulin delivery pens. Package contains 100 individually sealed sterile needles.