This listing is for a Pack of 10 For joining two 28mm copper or plastic plumbing pipes in a 90 degree elbow arrangement (pipe inserts are required when using to connect plastic pipe) Comes complete with olives Seal is formed with the olive and not the thread so PTFE is not recommended as it can reduce the compression capabilities of the thread. WRAS Approved, Weight: 5.070632026 pounds, Manufacturer: Floplast