R410 high pressure charging hose 1.with shut-off ball valve 2.1/4" & 5/16" SAE fitting 3.high quality, ... copper, titanium, stainless steel and aluminum tubing. 2. About factoryExperience: With 21 years experience in refrigeration tools field, the leading manufacturer ... ", 60", 72"(90cm, 150cm, 180cm) HIGH QUALITY R410A Charging hose with Ball Valve