BD Micro-Fine+ pen needles are precision-engineered insulin delivery devices featuring 31G (0.25mm) thickness and 6mm length. Each box contains 100 sterile needles designed for comfortable and accurate insulin administration. These pen needles are compatible with most insulin delivery pens available on the market. The 6mm length is suitable for subcutaneous insulin injection, while the 31G ultra-fine gauge helps minimize injection discomfort. Each needle is sterile and intended for single use only. Always consult with your healthcare provider regarding proper injection technique.