The Robinair Side-Wheel Manifold Gauge Set 40134A is a high-quality HVAC tool designed for charging and pressure purposes. It features a brass forging construction and comes in its original box. The multicolor gauge includes a blue low side hose, red high side hose, and yellow service hose, making it versatile for various applications. With mechanical features and vacuum units in PSI, this A/C gauge set is a reliable option for professionals in the HVAC industry.