The ATD 3661 is a professional-grade Brass Manifold Gauge Set designed to meet SAE, EPA, and UL service standards. Built with precision anti-flutter gauges, this manifold set includes color-coded 60″ nylon barrier hoses and standard R1234yf couplers.

Key Features:

• Designed for R1234yf A/C service and diagnostics
• Anti-flutter gauges reduce needle vibration for precise readings
• Easy recalibration capability ensures long-term accuracy
• Solid brass manifold block with three 12mm (F) fittings (SAE J2888 compliant)
• 60″ red and blue nylon barrier hoses with 12mm (M) fittings (both ends)
• 60″ yellow hose with 12mm (M) fitting × 1/2″-16 LH ACME fitting
• Includes standard R1234yf quick-connect couplers
• All hoses and fittings meet SAE J2888, EPA, SAE, and UL standards