Features: The Water Hammer Arrestor 1/2inch Thread is designs to protect your washing machine control pipelines systems. Compacts size, It can be easily mounted in tight space either vertically or horizontally. This residential water hammer arrestor is great for use with toilet supply valves or toilet Pipe, ensuring perfect performances. Make from Stainless steel materials, this water hammer arrestor ensures durability and long terms use. Help to minimize the noise caused by water hammering, contribute to a quieter environment. Specifications: Materials: Stainless steel Thread: 1/2inch Package Includes: 2Pcs Water Hammer Arrestor note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to difference between different monitors, the picture may not reflect the actual color.