• For taps 21mm & 23mm, (13/16-Inch & 15/16-Inch) both male & female
  • Includes O-rings
  • Please note: The Ultrastream comes with the adaptor set included.

How to measure:


  • Firstly, unscrew your aerator from the bottom of your kitchen tap.
  • Now measure the diameter of your aerator.
  • If the aerator is a male thread, measure the diameter from the outside of the thread.
  • If the aerator is a female thread, measure the diameter on the inside of the thread.
  • If this measurement is 15 mm, then purchase the same thread adapter as your aerator thread.

Click here for photos and more information on how to measure your tap.