Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Can't buy parts.

The end of the hose snapped off at the main valve during removal and nobody sells hoses separately. I have to buy whole new set because of one bad fitting.I am also skeptic about the safety shut off in case of one tire leak. I had small leak and it bleed- both tires. Convenient system, but require monitoring. IMHO combining it with PressurePro sensor is the best.