The Series 41 Digital Manifold, 3‑Pak PLUS IITM Hoses with Compact Ball Valves is a professional-grade HVAC/R diagnostic solution designed for technicians who demand speed, accuracy, and durability in the field. Engineered for servicing and troubleshooting modern refrigeration and air conditioning systems, this complete kit combines advanced digital manifold technology with high-performance IITM hoses and compact ball valves for reliable system measurements and easier refrigerant management.