With a fairly rare 18mm neck these serum pumps are officially called 18/400mm neck sized.  They are great for oil dispensing in particular.  With a dip tube of 10cm they are suitable for most glass bottles with a neck of this size.

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18mm Serum Pump Black

  • Product Code: SPB
  • Availability: In Stock
  • $0.75

  • Ex Tax: $0.68

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