These are replacement cartridges for
Easy to replace yourself , the small discs on the top of the tap tops can be prised off and there is a screw underneath that can be undone so that the tap cap can be removed. The cartridge should then be relatively easily removed (may need untwisting with some pliers carefully) The new cartridge can then be inserted and everything tightened up again.
PLEASE NOTE - Priced here for a SINGLE cartridge
Please call the Ingarden team on 01732 463409 for more information