"I have made a New Year's Resolution to never buy another trap made by Floplast! Their fittings are okay and always seal well but the traps are rubbish. It is very easy to cross thread the nut when attaching it to a basin waste and the seals very rarely seal first time; if at all! The seal area where it screws to the waste is too small and this allows them to move and not seat properly. This one is going back tomorrow (used) and a new bottle trap that I bought at the same time is also being swapped! McAlpine from now on every time for me as the small extra cost is better than the hassle!"