ACDelco 32106 Professional 25 ft Bulk Reel of 1/2 in Fuel Line/PCV/EEC Hose Nitrile tube that is spiral reinforced for enhanced durability NBR-PVC cover that is oil resistant and resists the effects of high heat and ozone found in engine compartments Vacuum rating of 24 in/Hg for sizes less than 1?2 in I.D., and 10 in/Hg for sizes 1?2 in to 3?4 in I.D. at ambient temperatures Warning: Do not use for pressure lines on fuel injected engines or for cooling system applications. Use an ACDelco Specialty Premium Fuel Injection Hose (MPI) for fuel injection applications Intended for use with fuels where MTBE concentrations are no greater than 15% by volume