This brass compression fitting is perfect for reducing the size of your pipe from 15mm to 10mm. It is designed for use with compression connections and is suitable for use in a variety of settings. The fitting is made from high-quality brass and is built to last, ensuring that you can enjoy reliable and long-lasting performance. The end C (for Tees) of this fitting is also designed for compression, making it easy to install and use. Whether you're working on a plumbing project or simply need to reduce the size of your pipe, this compression fitting is the perfect solution. It is compatible with a range of different pipes and is sure to provide you with the fit and finish you need.