Features: 1.Leakproof: The AN4 female flare end cap has good sealing, to prevent leakage, improve turbocharger efficiency and restore optimal engine performance. 2.Material: Made of aluminum alloy material with blue appearance, anti corrosion, strong rust resistance and stable performance, ensuring long term use. 3.Function: The flare caps will block off fuel hose line prevent dirt and debris from entering the external threaded hose fittings and adapters. 4.Perfect Replacement Parts: Used to repair damaged and worn parts of the original car, giving you better performance of your car. 5.Widely Used: The AN4 female flare end cap is applicable for automotive fuel lines hose, oil line, gas line, water line, fluid line and air line. Specification: Item Type: AN4 Female Flare End Cap Material: Aluminum alloy Fitment: Universal Fit