53010-AUT Automotive Pressure Testing Kit | Includes Nitrogen Pressure Regulator, Charging Hose, Leak Testing Adapter, R134A Coupler, Blow Molded Case | Professional-Grade for Leak Testing. 🟢 THE ULTIMATE AUTOMOTIVE A/C LEAK TESTING KIT – This kit includes the Mastercool 53001 Nitrogen Pressure Regulator, a 38” charging hose, leak testing adapter, and an R134a high-side coupler—all in a heavy-duty blow-molded case.
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