old rusty calcified drain hole in the kitchen sink with limescale and scurf scum

appliance background basin brown calcified clean cleaner cleaning close closeup dirt dirty domestic drain drop droplets drops flowing grunge hole home household housework hygiene kitchen lime limescale liquid metal metallic plaque plug plumbing rust rusty scale scrub scum scurf sink stain stainless steel tap tube wash washbasin washbowl wet white