1)PVC OR EPDM inner tub 2) High quality NYLON wire braided 3) 0-90 temperature 4) 0---10BAR presure ,10-----19mm out diameter 5) forging brass nut and insert or zinc nut and insert , the surfacing is nickel plated or chrome plated !can link with the shower head 6)have win the CE and ACScertificate