Russell 632110 ProFlex -8AN Stainless Steel Braided Hose - 6 Feet Superior bonding eliminates hose fraying when cut Secondary rubber jacket increases overall flexibility Used with small oil, fuel lines, fuel gauges and vacuum lines 308 stainless wire braid outside construction provides durability and resists heat Actual I.D. (Inside Diameter) is 7/16, nominal I.D. is 1/2 and outside diameter is 5/8 with -8 size