The McAlpine R16-BL is a plumbing component designed for use in waste water systems. Specifically, it is a 1¼" plain tail that features a 19/23mm universal connection. The plain tail refers to the straight section of pipe that connects to the waste outlet, while the universal connection allows for a variety of waste pipes to be connected to the component. The R16-BL is designed and manufactured by McAlpine, a leading manufacturer of plumbing components in the UK. The component is made from high-quality materials to ensure it is durable and long-lasting. Overall, the McAlpine R16-BL 1¼" Plain Tail x 19/23mm Universal Connection is a reliable and versatile plumbing component that is suitable for a range of waste water systems. ・ Available in Black or Grey ・ 1¼" Plain Tail x 19/23mm Universal Connection ・ Reduces Mechanical Pipe Boss Connector to accept 19/23mm pipe ・ Conforms to BS 6798:2014 and Building Regulations Approved Document H