Comparison : Item # 20HB-20SF90, 1.25 Inch (in) Hole Size Hose Barb to SAE Flange Head - 90 Degree
Item # 24HB-24SF90, 1.50 Inch (in) Hole Size Hose Barb to SAE Flange Head - 90 Degree
Item # 32HB-32SF90, 2.00 Inch (in) Hole Size Hose Barb to SAE Flange Head - 90 Degree
Item # 40HB-40SF90, 2.50 Inch (in) Hole Size Hose Barb to SAE Flange Head - 90 Degree
Item # 48HB-48SF90, 3.00 Inch (in) Hole Size Hose Barb to SAE Flange Head - 90 Degree