Refrigerant charging hose 600 PSI (42.2kg/cm20 w.p 3000(211.26kg/cm2) burst R134A Recharge Hose Type:10-1/2" hose Color: Yellow+Black Total Length: 29.5 cm 600 P.S.I. (42.25 KG/cm) W.P. 3000 (211.26 KG/cm) Burst Material:Plastic + Metal Features: With High pressure resistant hose,easy lock coupler. Checks low side pressure for accurate fill of your air conditioner. Built-in safety valve to prevent accidental venting of refrigerant. One adapter is connected to freon and the other is connected to the car. Plastic quick connector can be interfaced with the low pressure side car air conditioning system.