This EcoStar Water Saving Shower Regulator could save you up to 65percent on your water bill* plus associated energy costs. Fits most common basin and sink mixer taps. Suitable for gravity, mains and mixed pressure applications. EcoStar is a branded range that highlights the small changes that each and every person can make towards protecting the environment in the ongoing battle against climate change. The EcoStar range consists of easy to install products that optimise energy efficiency in every day life, from taking a shower, to washing the dishes or brushing teeth, by lowering the flow rate so that the right amount of water is used saving the average household up to 70percent water usage. *Based on an 18L flow tap with 1 bar pressure. Always read instructions.