BD Micro-Fine+ Pen Needles are precision-engineered insulin pen needles designed for comfortable insulin delivery. Each needle features a 31G (0.25mm) gauge and 5mm length, providing a balance between effective delivery and patient comfort. The package contains 100 sterile, single-use needles. These pen needles are compatible with most insulin delivery pens and feature BD's advanced needle technology for reduced injection force and increased patient comfort. The 5mm length is suitable for subcutaneous insulin administration. Each needle comes individually sealed to maintain sterility until use.