Keeney's p-trap is designed to prevent sewer gas from escaping a plumbing fixture or drain. It has a 1-1/2 in. inlet and outlet with a cleanout designed for ground joint connection and comes in a decorative polished chrome finish. The durable 17-gauge semi cast brass construction offers long-lasting use. An included wall flange with a matching finish completes the look. This product includes all necessary nuts and washers for installation. You can install with confidence knowing Keeney stands by this product with a Limited Warranty.