The McAlpine PUWF3-CP Wasteflow with Pop-Up Waste and Trap is a plumbing component designed for use in sinks or basins to control the flow of water and dispose of waste. Here are some of its features: Material: The wasteflow is made of chrome plated brass for durability and resistance to corrosion. The control knob is also made of chrome plated brass, while the waste flange and plug are made of chrome plated stainless steel. Pop-up waste and trap: The wasteflow features a pop-up waste and trap mechanism that allows for easy drainage of water and disposal of waste. Control knob: The control knob is used to operate the pop-up waste and trap mechanism. It is designed for easy use and is made of chrome plated brass for durability. Waste flange and plug: The waste flange and plug are used to cover the drainage hole in the sink or basin. They are made of chrome plated stainless steel for durability and to match the chrome finish of the wasteflow. Overall, the McAlpine PUWF3-CP Wasteflow with Pop-Up Waste and Trap is a high-quality plumbing component that is designed to provide efficient and reliable water drainage and waste disposal. ・ Available with L10 Trap (75mm Water Seal) or SM10E Trap (60mm Water Seal) ・ 1½" Outlet ・ For information on Wasteflow Products click here ・ CP brass control knob ・ CP stainless steel waste flange and plug