2-1/2" NH-NST 45 Degree Female Swivel x Male Rigid Adapter Aluminum FM1010F Try running any pipe at

Try running any pipe at 1

Industrial & Fire 5” NPT Female x 4" NPT Male Fitting Anodized Aluminum

you'll probably get a hose with a leak or two

Suitable for commercial & residential uses

100% universal for all fire hydrants in the USA

2-1/2" NH-NST 45 Degree Female Swivel x Male Rigid Adapter Aluminum FM1010F Try running any pipe atIndustrial & Fire Grade Threaded Aluminum (Female to Male) 45 Degree Adapters Female x Female Aluminum Reducers & Increasers are used to change threads, sizes, and styles of fire hose, pipe outlets, fire trucks, hydrants, pumps, industrial systems, and more. Rocker lug styles are common. Use reducers to hook up to your fire hydrants, different size fire hoses, or garden hoses for increased pressures. F (Female) M (Male) NH NST (Swivel) (National Hose