Recondition threads on SAE high pressure male/female fittings. Hollow end tap slides over flared end of line for easy re-threading female connector. Compact design with pass through bored out center hole on each socket. Allows thread reconditioning with flared tip supply line inside pressure fitting. Ideal for gas, AC, and liquid high pressure fittings common in heavy equipment, trucking, marine, and aircraft industries. Easy hand operation with supplied handle.