Standard black kitchen sink / bath plug.
We also keep the smaller plug for your bathroom wash hand basin.
Fits traditional sized waste outlets.
Makes a great replacement for a standard plug, though if your original plug is a popup type, it may not fit (pop-up plugs are often a different size).
This plug suits a plug-hole 1-3/4 inch in diameter - (the waste fitting that the plug goes into is referred to as 1-1/2 inch - that describes the size of the plumbing connection under the sink).