1. Adjustable pressure safety design: manual pressure adjustment with a builtin safety valve automatically moderates pressure to prevent interference and potential equipment damage. Delivers constant, stable flushing performance for full air conditioner maintenance without affecting other devices. 2. Visible pressure adjustment: dual PSI gauge provides precise control during flushing of air conditioning systems. Clear visibility lets you monitor pressure levels, support safe operation, and optimize cleaning performance without overpressure risk. 3. Extensive reach and durability: 0.8 m flexible rubber hose allows easy maneuvering in tight areas around vehicles. strength materials ensure reliable performance when cleaning air lines. 4. Effective onehanded operation: compact design supports easy indoor maneuverability. Ergonomic handle enables comfortable onehanded use, while thorough rinsing ensures effective dirt removal. Use scenarios: Home or garage auto maintenance: flush the car AC lines after component replacement or as part of routine service to remove debris and restore performance. Professional auto shops: quick, onsite flushing of air conditioning lines in sedans, SUVs, and light trucks with a singlehanded workflow. Fleet and dealership service: maintain multiple vehicles in tight spaces, such as engine bays, where the compact kit and flexible hose aid efficient cleaning.