Easy Glide pen needles also come in 29G 12mm, 31G 5mm u0026amp; 31G 8mmnFDA Approved, Sterile, Latex Free and Non ToxicnThin Wall Cannulas for an Easier FlownCompatible with all insulin and non-insulin pensnTriple-Bevel Cut for a Sharper PointnThese pen needles may be used as replacement needles for insulin pen delivery devices. They are non-toxic, non-pyrogenic, and sterile.