Our manifold gauge sets are constructed of the finest materials and machined with precision to the highest quality standards. At Mastercool, every manifold we build is built to last. Anti-flutter gauges smooth out needle movement. Yellow hose includes shut-off valve.
Piston type free-floating valves reduce o-ring wear. Extra access port for vacuum line. Gauges can be recalibrated to maintain accuracy. Inner nylon layer hoses meet EPA, SAE and UL standards 100% U.Designed, assembled and tested HEAVY DUTY FORGED BRASS BODY gives life-long durability and endurance FREE FLOATING PISTON TYPE VALVES allow for less friction and internal wear and tear extending the life of the internal o-rings 2 1/2 SILICONE DAMPENED GAUGES smooth out needle movement while the color coding of R134a and R12 provides immediate refrigerant recognition EXTRA ACCESS PORT for vacuum line.