This screw is made of high quality brass. It is not easy to rust, lightweight and durable material for long term use. Replacement for the solid brass click mechanism. There is a stainless steel spring in the screw, durable and anti-rust. The use of a spring mechanism and a screw thread promotes a pop-up effect. Simple operation, quick installation and disassembly, saving time and labor. A great replacement part for pop-up drain valves in sinks. This replacement screw can be used for most kitchen sink drain plugs. Serves as a replacement part for sink pop-up drain valves. Easy to install, hardware and gaskets are included, a perfect accessory for brass tub stoppers. Specifications: Material: Brass Size: As Picture Show Color: Brass Delivery Range: 2 * Oil Drain Bolts Note: this does not include other things, the color is based on the first picture and other pictures only show the effect Due to the differences between different monitors, the picture may not reflect the actual color of