If you're building or upgrading fuel, oil, or coolant lines in your car, truck, or performance machine, you need fittings you can trust. This Edelbrock/Russell 610161 is a -6AN (that's the size) 90-degree hose end made from lightweight, durable aluminum. It features their awesome 'Full Flow' design with a unique internal taper. This taper is key – it grips the hose securely without cutting into the inner liner, which helps prevent leaks and hose blow-off under pressure. The 37-degree flare seat creates a solid, metal-to-metal seal without needing any messy Teflon tape or sealant (just make sure everything's clean and tight!). It's designed specifically for use with Russell's ProFlex, ProRace, and ProClassic hose lines, and is completely reusable. The 90-degree angle with a 1/2-inch centerline radius helps you navigate tight spaces in your engine bay. The 'Endura' anodized finish gives it a bright, polished look that resembles stainless steel but is much lighter. It has female threads, making it interchangeable with a huge range of other standard AN-style adapters and fittings. A reliable, high-quality fitting for any serious automotive or racing application.