The 3Steel Inv.L Flare Nut Str. by Fittings Unlimited Inc is engineered for reliable connections in fluid systems. This steel flare nut is designed for use with 3-inch diameter tubing, ensuring a tight seal and preventing leaks. Its durable construction provides resistance against wear and tear, making it suitable for high-pressure applications. This fitting meets industry standards, ensuring compatibility with various systems. Ideal for professionals in plumbing and industrial sectors, this flare nut is a dependable choice for secure connections.