embecta Nano PRO pen needles, 32G x 4 mm, 100 per box. The 4 mm length is the shortest commonly available and now the length most often recommended for adults starting on pen injections. Specification Gauge: 32G — thinner than 31G Length: 4 mm Quantity: 100 per box Fit: universal screw-thread for most insulin and injectable pens Sterile, single-use, individually sealed Why 4 mm has become the default The evidence behind short needles is fairly settled: for most adults, a 4 mm needle inserted at 90 degrees reaches subcutaneous fat reliably without needing a skin fold, and substantially reduces the risk of accidentally injecting into muscle. Intramuscular injection changes how quickly medication absorbs, which matters a great deal with insulin. Shorter needles are generally more comfortable too. That said, the right length depends on your body and your technique — check with your pharmacist or diabetes educator before changing needle length, particularly if you're currently on a longer needle and using a skin fold. Good practice Fresh needle each injection; reuse dulls the tip and raises infection risk Take the needle off the pen after injecting, rather than leaving it attached Rotate sites systematically — repeated injection in one spot causes fatty lumps that make absorption erratic Count slowly to ten before withdrawing, to ensure the full dose is delivered Used needles go in an approved sharps container. Bring full containers to us or any participating pharmacy for disposal Not sure it fits your pen? Universal-fit covers most devices, but ask us before buying a box if you're using an unusual pen or a recently launched injectable. Store at room temperature in the original box, dry, and out of reach of children.
