When buying a new basin you should consider getting a basin waste too. The basin you've bought may not come with a waste so it's important that you get a basin or sink waste too. Wastes are essential for the basins plumbing and they fit snugly into the standard hole that comes premade. There are many varieties of wastes including a standard plug chainlink waste, popup and a click clack push button waste mechanism. The great thing is that you can customise, so there's plenty of choices!