This listing is for a Pack of 5 Being a "fitting reducer" this cannot be used directly onto 22mm pipe but must be inserted into a 22mm pipe fitting such as a coupling or an elbow. 15mm pipe is inserted directly into the other end of the reducer without the need for a 15mm fitting. Should you require a fitting where the two different size pipes are inserted into the reducer, you should purchase the appropriate sized "reducing coupling" To prepare copper pipe for solder ring fittings, cut it square, deburr the edges, clean the pipe end and fitting socket to bright metal with an abrasive pad, and apply a thin layer of flux before assembly. To solder a solder ring fitting, clean and flux the pipe end, push it fully into the socket, and apply heat evenly to the outside of the fitting until a complete 360 degree ring of molten solder appears at the socket mouth. WRAS Approved, Weight: 0.330693393 Pounds, Manufacturer: Cubralco