The McAlpine BOSS82CAST-BL is a mechanical two-piece cast iron soil pipe boss connector that is designed to connect a waste pipe into a vertical soil stack or a horizontal drain pipe. The connector is black in color and has a drill size of 22mm, which means that you will need a 22mm drill bit to make the necessary hole in the pipe. The McAlpine BOSS82CAST-BL is supplied with a fixing tool that makes installation easier. The fixing tool is used to tighten the two-piece connector around the waste pipe and create a secure connection. The connector also features a rubber seal that provides a watertight and airtight seal between the waste pipe and the soil stack or drain pipe. This type of connector is commonly used in plumbing installations, particularly in situations where it is not practical to connect the waste pipe directly into the soil stack or drain pipe. The McAlpine BOSS82CAST-BL is a high-quality product that is designed to last and provide a reliable connection for many years. ・ Available to suit 4'/110mm, 3½"/90mm and 3"/82mm soil pipe ・ Available for 1¼" and 1½" waste pipe size ・ For cast iron soil pipe ・ Suitable for condensate discharge only ・ Simple dry fixing mechanical connection