Don't be fooled by the simple design of the Essentials range, although they may look basic, the quality and technologies that it uses are top notch. They use single lever ceramic disc technology, for easy and smooth operation, all that requires to turn them on and off is a simple flick of the handle and the water will either flow beautifully or stop instantly without so much as a drip. The ceramic discs are also extremely hard-wearing, so they will stand the test of time. Basin Mixer Video: Bath Mixer Tap Bath Shower Mixer Tap.