These are machine fuel lines designed for use in 94-98 12V Cummins trucks.
Fuel Lines are available in .078, .084, .093 in mild steel, and .093 stainless steel (SS not recommended in daily drivers)
These are made for us by one of the top diesel shops in the US and fit well.
**Note:
Stainless Steel Injection Lines are not recommended for daily drivers
due to engine vibration and brittleness. Intended for trailered race
trucks or show trucks.