Home / Tools / Gauges & Leak Detection / Pro Plus Manifold Gauge, 4-Valve, 3-1/8″ OD, A2L, R454B/32/410A/22 NAVAC · MODEL N4A4BPro Plus Manifold Gauge, 4-Valve, 3-1/8″ OD, A2L, R454B/32/410A/22 Specifications Additional information Brand NAVAC Related products MASTERCOOL · 56200RAPTOR” REFRIGERANT LEAK DETECTORPickup · Delivery Pricing & stockSign in NAVAC · NTR14NAVAC NTR14 Internal and External ReamerPickup · Delivery Pricing & stockSign in MASTERCOOL · 70090-ACOPPER TUBE CUTTER KITPickup · Delivery Pricing & stockSign in SPYDER · SPY600917CFSpyder Tarantula 4-1/2-in Carbide-tipped Non-arbored Hole SawPickup · Delivery Pricing & stockSign in