●US Standard 3/8-Inch connect with any model 3/8" angle valve.304 Stainless steel braided exterior ●Length 24 inches 2pcs US standard 1/2" threads connect faucet with any nipple or inlet pipe ●Easy to install,we have one extra Spanner.you can tighten the nut very easy. ●Best ss304 stainless steel and inner EPDM tube no smell no toxic ●Welcome contact us if you have any question and we will reply you in during 12 hours.