The McAlpine BOSSCONN82Z-BL Black Mechanical Soil Pipe Boss Connector is a plumbing fitting designed for creating a connection to a soil pipe using a 57mm hole saw. It is suitable for a 4"/110mm soil pipe and is supplied with a fixing tool for installation. The boss connector features a mechanical jointing system that provides a secure and watertight connection to the soil pipe. The black finish is designed to blend in with black soil pipes. To install the boss connector, a 57mm hole should be cut in the soil pipe using a suitable hole saw. The fixing tool can then be used to tighten the connector onto the pipe. The boss connector can then be connected to the pipework of the appliance that needs to be connected to the soil pipe. It is important to ensure that the boss connector is installed correctly and securely to prevent leaks and potential damage to the plumbing system. If you are not familiar with plumbing installations, it is recommended to seek the assistance of a professional plumber. ・ Available to suit 4'/110mm and 3"/82mm soil pipe ・ Available for 1¼" and 1½" waste pipe size ・ Suitable for waste water and condensate discharge ・ Simple dry fixing mechanical connection ・ Universal connection for pushfit or solvent weld waste pipe