Yellow Jacket 40344 is a professional-grade single test pressure gauge designed for accurate high-side pressure measurement in refrigeration and air conditioning systems. Identified by its durable red casing, the gauge is calibrated for R22, R410A, and R404A refrigerants, providing versatility across a wide range of HVAC applications. This model includes a 12-inch hose that ensures secure connections and flexibility during system checks, routine maintenance, or troubleshooting. Built with the durability and precision expected from Yellow Jacket tools, the 40344 delivers consistent performance even in demanding field conditions. Its clear dial face allows technicians to obtain quick and accurate readings, improving efficiency and reliability on the job.