This product is made to be installed with 56mm (known as 2 inch solvent weld) pipe or fittings. If your pipe or existing fittings measure 50mm, or has PP printed on it, then this product is not compatible and you will require 50mm pushfit or compression fittings Solvent weld waste pipe coupling designed to join two waste pipes This listing is for a Pack of 2 Solvent weld fittings are secured using solvent weld cement for a permanent and strong installation This is for waste water use and not rainwater drainpipe use which is a different product, Weight: 0.220462262 pounds, Manufacturer: MSL