STAINLESS STEEL EXTERIOR & RUST-PROOF: Exterior tube is made from premium 304 stainless steel, build to resist daily corrosion, scratch and tarnishing, with 4 PCS washers ensuring quality and longevity. TIPS: Washers Must be Put in Both Ends of the Hose When Install. KINK-FREE & 360° SWIVEL: The new 360 degree anti-wrap innovative structural design, has a good connection, can be free to swivel. This shower head hose is lightweight, very flexible and no kinking. Make it easy and free for all shower. EPDM INNER: Inner pipe made of non-toxic, odorless EPDM material that can be used in high-pressure and high-temperature environment, especially for baby shower. SOLID BRASS INSERTS: Both interface connectors are constructed from brass inserts. Both interfaces are G1/2 which fits for G1/2, 1/2 NPT, 1/2 NPSC interface and shower head. Quality SERVICE: Feel free to contact us if you have any problem and we will always be there to help timely.