Comparison : Item # 20NPT-20SAE45, 1.25 Inch (in) Tank Pilot SAE Thread to Tank Coupling - 45 Degree
Item # 24NPT-24SAE45, 1.50 Inch (in) Tank Pilot SAE Thread to Tank Coupling - 45 Degree
Item # 32NPT-32SAE45, 2.00 Inch (in) Tank Pilot SAE Thread to Tank Coupling - 45 Degree
Item # 40NPT-40SAE45, 2.50 Inch (in) Tank Pilot SAE Thread to Tank Coupling - 45 Degree
Item # 48NPT-48SAE45, 3.00 Inch (in) Tank Pilot SAE Thread to Tank Coupling - 45 Degree