Mastercool 89661-AYF - R1234yf u0026 R134A Aluminum Manifold Gauge Set

Features. Professional extruded aluminum block. 2.1/2 silicone dampened recalibrateable gauges. Free-floating piston type valves reduce o-ring wear. Extra access port for vacuum line. Extra large sight glass for visual refrigerant check. Large easy-to-grip knobs. R1234yf high and low side couplers with extended disconnect protection sleeve meets SAE J639 & J2888. R134a high and low side manual couplers meet SAE UL and EPA requirements for containment of refrigerant. 1/2 acme-m x 1/2 acme-f LH thread adapter. (2) 12 mm-m x 14 mm-F R1234yf adapters. Weight: 6 lbs