Comparison : Item # F 100CI, 1 Inch (in) Size Plated Iron Type F Male Adapter x Male NPT Cam and Groove Coupling
Item # F 150CI, 1 1/2 Inch (in) Size Plated Iron Type F Male Adapter x Male NPT Cam and Groove Coupling
Item # F 200CI, 2 Inch (in) Size Plated Iron Type F Male Adapter x Male NPT Cam and Groove Coupling
Item # F 300CI, 3 Inch (in) Size Plated Iron Type F Male Adapter x Male NPT Cam and Groove Coupling
Item # F 400CI, 4 Inch (in) Size Plated Iron Type F Male Adapter x Male NPT Cam and Groove Coupling