【High Quality Material】 The brass double nipple is made of high quality brass, which has high strength, high gloss and corrosion resistance. It can be used for a long time. 【Package Included】 You will receive 2 pieces of 1 inch to 1/2 inch reducers. The upper outer diameter is 20 mm and the lower outer diameter is 32 mm. They can be installed almost anywhere in the pipe. 【Easy to 【Install】Our 1" to 1/2" reducers are very easy to use. They are a reliable and widely used connection method in heating, plumbing, and irrigation. 【Fixed Fittings】 The male threads on both sides are precisely and consistently cut, allowing our fittings to be tightened in just a few turns, without the risk of leakage. 【Versatile】 Our brass reducing nipples are not only suitable for heating, cooling, and solar energy systems, but also for pipes, radiators, drains, manholes, tanks, and sump pumps.