This slotted push button pop-up basin waste is ideal for any basin with an overflow and features a standard 1 1/4 inch connection. The core of the waste is made ofsolid brasswhich makes it incredibly resistant to rust and ensures it will last for years to come. It is then covered with a chrome finish for a beautiful, polished exterior that looks great in any bathroom. The design is simple - just push the centre of the waste to cause it to pop up and release the water in the basin. Nes Home Chrome Basin Sink Waste Modern Pop Up Sprung Plug Slotted with Overflow in Silver