[Convenient Operation] --- Simply press the cover to fill or drain off water, much easier than traditional pull rod or other wastes. Besides, you can turn the upper cap counter-clockwise to unscrew and clean. Only suitable for the bathroom sink with overflow. [Smart Drainage System] --- Water can be drained off more quickly than normal pop-up wastes. With the overflow hole of the sink, it can prevent water from overflowing the wash basin and flooding your floor. [Premium Materials] --- The basin waste features H59 lead-free brass and premium white ceramic, efficiently resistant to scratches, corrosion and rust. Durable and high-quality silica gel help to store water well and prevent water leakage. [UK Standard Size] --- G1 1/4 BSPP threaded waste. Diameter of waste bottom: 40.6mm. Diameter of waste cover: 65mm. The installation is easy due to its upgraded simple construction. The photos and product description on this page exhaustively mention how to install. You can totally install it by yourself, saving money of hiring a plumber. [Nice Service] --- Hapilife provides 10 years guarantee and 30 days unconditional return or refund policy to ensure our customers without any worries. Our perfect customer service system will be dedicated to solving any after-sales problems for you., Manufacturer: Hapilife