Amazon.com: uxcell Pipe Fitting Reducer Adapter M20X1.5 Male to 1/2 G Female, Stainless Steel for Water Oil Air Pressure Gauge : Industrial & Scientific
Male M20x1.5 to 1/2" NPT Female Adapter
Killer B Motorsport OEM M20x1.5 to 1/8NPT Adapter - Universal - New Provisions Racing
M20 x 1.5 Male to 3/8” NPT Female Gauge Sensor Sender Thread Adapter
Amazon.com: Metric Fitting M20X1.5 M20 x 1.5 Female to JIC 37 AN-04 UNF 7/16-20 Male Adapter : Automotive
Setrab Oil Filter Adapter with 180°F Thermostat, M20x1.5, 19-SPT76-20-180-22
Amazon.com: uxcell Pipe Fitting Reducer Adapter M20X1.5 Male to 1/2 G Female, Stainless Steel for Water Oil Air Pressure Gauge : Industrial & Scientific