The Pro-C A/C Professional Digital Display Automotive Recharge Gauge & Hose (ACP400AD) is a fantastic tool for working with R-134A refrigerant in automotive air conditioning systems. This recharge gauge and hose combo allows you to accurately measure and recharge your A/C system with ease. The digital display provides clear readings, making it simple to monitor pressure levels and ensure proper refrigerant levels. It's a must-have for any automotive enthusiast or professional looking to maintain and service their A/C system. Stay cool and comfortable on the road with the Pro-C A/C Professional Digital Display Automotive Recharge Gauge & Hose!