This is a 50' hose with a 1/2" inside diameter and machined brass 1/2" Male NPT threaded ends on each side. Machined brass end connectors never corrode and seal better against leaking than aluminum, steel, or zinc. 

Specifications

• 50' x 1/2"
• 1/2" Inside Diameter
• 1/2" Male NPT
• 250 PSI Working Pressure
• 1070 PSI Max Burst Pressure
• Machined Brass Ends
• Class C Weather, Oil, and Solvent Resistant Outer EPDM Rubber Coating
• -40 to 190 Degrees Fahrenheit Operating Temperature
• Made in the U.S.A.