When your diverter will not connect to the thread on the end of you kitchen tap you will need to use a rubber style connection.
This connection will slide onto the outside of the spout and has a hose clamp which will clamp onto the end of the kitchen tap.
Will suit spout diameters up to 20mm and down to 15mm using the extra supplied sleeve.
Please not this may not work with a reverse osmosis system as the back pressure from the membrane will force the connection off/burst in high pressure areas.
Diverted pictured is not included.