ARKSEN 60" Hoses AC Set Charging Refrigeration Refrigerant, R134a 5 foot lenth allows you to easily maintenance any air conditioning system Knurled brass connectors are highly durable 45 angled connectors provides easier access to the service ports Our hoses can be used for R12, R22, R134a, 404a, and R502 systems Designed to meet and exceed 1/4" SAE requirements for refrigerant permutation