This A‑interface nozzle is a dedicated replacement part for GluBud needle-free injection pens. It provides a tight, secure connection to maintain stable injection pressure and consistent medication flow. Made from medical‑grade materials, it is safe, non‑irritating, and simple to install.
Compatibility Note: The A‑interface is fully compatible with all C‑interface cartridges and can be used interchangeably without additional adapters.





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