Structure: Designed with 1/8" NPT threads, this high pressure grease gun hose has a 0.425" outer diameter for effective lubrication and performance. Material: Constructed with a polyamide inner tube with polyurethane sheathing and zinc plated end connections. Pressure: Offering a continuous flow with a pressed trigger, giving you a working pressure of 5,800 PSI and a 13,775 PSI burst.