Why Watermark is so important to tapware & shower:The WaterMark certification is used in relation to water supply, sewerage, plumbing and drainage goods. All products are tested to comply with specific specifications and standards before they can be WaterMark approved, therefore you can be confident in the quality of your product.Without WaterMark certified products, it is illegal for a plumber to sign-off your project and issue a compliance certificate. Fit for basins that hole diameter is between 35mm-50mm Smooth single lever handle,single hole design Drip Free Ceramic disc cartridge for smooth and long lasting operation Matching Bathroom Basin or Kitchen Sink Easy to install,comes with completed attachment sets and accessories Reminder: Different mobile phones and computer screens will cause color difference. The actual color should be refered to the product you received.