Feature: The AN thread is a particular type of fitting used to connect flexible hoses and rigid metal tubing that carry fluid. Made of aluminum alloy material, anti-rust, anti corrosion, waterproof, oil proof, durable in using. Anodized finish for strength and firmness. Having the ability to easily connect flexible lines. Universal application for fuel, water, oil, air line end finisher. Please measure the OD of the hose before purchasing. Specification: Material: Aluminum Alloy Color: Black Size: AN6 /AN8 /AN10 (Fits For 3/8'' 1/2'' 5/8'' Fuel Oil Hose) Package Included: 4 x Car Hose Finisher Clamp or 8 x Car Hose Finisher Clamp