Discover the exceptional utility of our 6mm (Metric 12x1.0 Bubble) Steel Tube Nut set, comprising 10 precisely measured steel tube nuts designed for effortless installation and a secure fit. Crafted with durability in mind, these brake line fittings feature corrosion-resistant plating, ensuring a lifelong investment backed by our unwavering lifetime support guarantee. What sets these tube nuts apart is their impressive versatility and precision engineering. They seamlessly adapt to various materials commonly found in brake line systems, including steel, copper-nickel, copper-coated steel, PVF-coated steel, and stainless steel lines. With a generous set of 10 included, these fittings promise compatibility across a spectrum of materials, making them a reliable choice for projects involving multiple vehicles or components. Durability remains a hallmark of these tube nuts. Their plating offers robust rust protection, extending their lifespan and preserving their integrity during storage, whether you're prepping for installation or safeguarding them after use, even in humid environments. Furthermore, our tube nuts, like all 4Lifetime products, carry a lifetime guarantee, instilling confidence in the quality of your purchase and our commitment to addressing any potential concerns that may arise.