Basin/Sink ceramic disc mid-seat extender kit 19mm (Pair) [EF1006]. Is your basin or sink tap body just a little deep? If you are looking to replace your basin or sink tap assemblies only with ceramic disc tapware and prefer a different style to our EZYFIX Modern Lever styled tapware which comes with these extenders included, then we now offer our patented 19mm tap seat raisers for purchase seperately from our taps. The extenders simply sit in between the tap seat and your new ceramic disc tapware cartridges. View the installation instructions here. This kit comprises of two 19mm extenders. All conveniently delivered to your door !