Used to bring two horizontal pipe runs together into a main vertical pipe, usually when connecting two WCand#039;s into a main soil stack. The most common use for this is when an ensuite bathroom is separated from a main bathroom by a dividing wall, with a central soil pipe running vertically between them. It is also commonly used in public buildings where ladies and gentlemenand#039;s toilets are positioned back to back. The top three connections are ring seal sockets, the bottom of the branch is a spigot that can be fitted into another ring seal socket. The circular bosses on either side of the branch can be drilled out and used in conjunction with our SP10, SP11 and SP12 Boss Adaptors to introduce a 32mm, 40mm or 50mm waste pipe into the soil stack.