Evolution Aqua Flexible pond fittings are a perfect solution for all your pond equipment needs. The rubber fittings, known as "Boots", are made of strong and durable rubber that has been designed to fit easily onto various types of pipe from PVC to lead, Copper to clay. Each fitting has an easy to adjust jubilee clip on each end, making connection simple and gives a perfect seal with no need for gluing. The fittings can then be removed and reused over and over again and can be adapted to any pond system set up. The Blanking Cap (Stop End) is ideal for use when you need to stop or end pipework to prevent water escaping from pipe ends. Please Note - the sizes given below indicate the pipework they are suitable for use with. For instance: A 2" (inch) T-connector is suitable for use with pipework that has an Internal Diameter of 2". The Fitting itself with have an internal diameter slightly larger, in this example, it would be 2.25 inch approximately