Comparison : Item # 20NPT-20SAE90, 1.25 Inch (in) Tank Pilot SAE Thread to Tank Coupling - 90 Degree
Item # 24NPT-24SAE90, 1.50 Inch (in) Tank Pilot SAE Thread to Tank Coupling - 90 Degree
Item # 32NPT-32SAE90, 2.00 Inch (in) Tank Pilot SAE Thread to Tank Coupling - 90 Degree
Item # 40NPT-40SAE90, 2.50 Inch (in) Tank Pilot SAE Thread to Tank Coupling - 90 Degree
Item # 48NPT-48SAE90, 3.00 Inch (in) Tank Pilot SAE Thread to Tank Coupling - 90 Degree