Wellion MEDFINE insulin pen needles offer comfort and safety as they are specially designed to facilitate optimal diabetes treatment. Optimal comfort, with the ultra-thin needle along with the silicone coating for ease of penetration. The wider internal diameter ensures maximum insulin flow. The ultra-thin Wellion MEDFINE insulin pen needles are available in different lengths to meet the needs of diabetic individuals. The internal protective cover of the insulin pen needle has a specific color depending on the length of the needle, making the needle length visible externally (color coding). In diabetes education, the responsible medical staff, along with the insulin, selects the ideal needle length.