Aeroflow 250 Series hose is a durable, professional light weight option that resists leaks and fumes. It's constructed from a PTFE inner liner with a reinforced 308 Stainless Steel layer wrapped in a black nylon outer braid for maximum appearance and abrasion resistance. Stainless Steel reinforced middle layer for maximum strength and burst pressureBraided Nylon outer shield for abrasion resistance Recommended for brake, E85, Alcohol, transmission, clutch, Nitrous, Power Steering, Oil, Hydraulics and Vacuum applications Minimum Temp -70 degrees C, Maximum Temp 250 degrees C 250 Series Hose specifications: AN Size: -4Hose I.D: 0.19" (4.83mm) Hose O.D: 0.30" (7.62mm) Operating Pressure: 4000 psi Burst Pressure: 12000 psi