Pair the NAVAC NEVK3 Rapid Evacuation Kit Complete with the Vacuum Pump of your choice to perform AC/R System Evacuations with speed. These Big Boy Evacuation Hoses are high-flow and LONG coming in at 6 feet each. This kit includes: 1 NAVAC NHB1 Fitting Evacuation Hose - 3/8in to 1/4in, 6ft long 1 NAVAC NHB2 Fitting Evacuation Hose - 1/2in to 1/4in, 6ft long 2 NAVAC NVR1 Valve Core Removal Tools 1 NAVAC NCR1 Valve Core Removal Tool 1 NAVAC NMV1 Micron Vacuum Gauge Kit Features 1/2in Large Diameter Hose for Fast Evacuation 3200 PSI Burst Pressure 640 PSI Burst Pressure 4-layer Construction for Low Permeation Vacuum rated to 20 microns Tool Features NVR1 Valve Core Removal Tool For use with both 1/4″ and 5/16″ flare fitting Designed for high-pressure refrigerants including R410a Metal handle for durability Vacuum rated to 20 microns NMV1 Micron Vacuum Gauge NMV1 - Micron Vacuum Gauge High-precision Pirani vacuum sensor Large backlit display Buzzing alert Ergonomic design