Feature:The AN thread is a particular type of fitting used to connect flexible hoses and rigid metal tubing that carry fluid.Made of metal material, anti-rust, anti-corrosion, waterproof, oil proof, durable in use.Anodized finish for strength and firmness.Having the ability to easily connect flexible lines.Universal application for fuel, water, oil, and airline end finisher.Please allow 3-5mm differences due to manual measurement.Specification:Material: MetalColor: Silver ToneSize: AN4Max Hole Inner Diameter: 13mm / 0.51''Min Hole Inner Diameter: 9.5mm / 0.37''Height: 21.7mm / 0.85"Package Included:5 Pcs Car Hose Finisher Clamp.