Comparison : Item # HD150NPT, 1 1/2 Inch (in) Hose Inner Diameter Zinc Plated Steel NPT Heavy Duty Stem
Item # HD200NPT, 2 Inch (in) Hose Inner Diameter Zinc Plated Steel NPT Heavy Duty Stem
Item # HD250NPT, 2 1/2 Inch (in) Hose Inner Diameter Zinc Plated Steel NPT Heavy Duty Stem
Item # HD300NPT, 3 Inch (in) Hose Inner Diameter Zinc Plated Steel NPT Heavy Duty Stem
Item # HD400NPT, 4 Inch (in) Hose Inner Diameter Zinc Plated Steel NPT Heavy Duty Stem