The McAlpine DC1-GR-BO is a 4"/110mm Drain Connector with an 'O' Seal Socket designed to fit 4"/110mm diameter pipes to BS 4514. It also includes a 1½" Universal Pipe Boss, which can be used to connect to a waste pipe or a soil pipe, and a Blanking Cap, which can be used to seal off the connection if needed. The 'O' Seal Socket ensures a watertight connection between the drain connector and the pipe. The DC1-GR-BO is made of high-quality materials, making it durable and long-lasting. It is easy to install and can be used for a wide range of applications, including domestic and commercial drainage systems. Overall, the McAlpine DC1-GR-BO is a reliable and versatile drain connector that provides a secure and leak-free connection between pipes. ・ Available in Black and Grey ・ Finned seal spigot for internal connection to 4"/110mm cast iron, plastic or clay ・ Ideal for low level connections ・ 1½" Universal Vent Boss ・ Include Blank Cap