The McAlpine BK1 is a combination of a clicker waste and bottle trap, designed for use with basins. It is an all-in-one unit, meaning that it has everything you need to install a basin waste and trap in one package. The clicker waste is a type of plug mechanism that is operated by pushing down on the top of the plug. This opens and closes the waste, allowing water to drain out of the basin. The clicker waste is easy to use and can be operated with one hand. The bottle trap is a type of plumbing trap that is used to prevent sewer gases from entering your home through the sink drain. It works by trapping a small amount of water in the trap, which creates a barrier to prevent gases from passing through. The McAlpine BK1 is designed to be easy to install and comes with all the necessary fittings and instructions. It is suitable for use with most basins and can be used with both standard and mixer taps. Overall, the McAlpine BK1 is a convenient and practical solution for installing a waste and trap for your basin. It saves time and effort by providing everything you need in one package and is a reliable and durable product. ・ Install in seconds ・ Uses an innovative and unique centre pin fixing ・ Trap is height adjustable ・ Clicker mechanism moulded in plastic to limit the effects of hard water ・ Fits basins with or without an overflow