Elevate your brake line repair and replacement projects with our 4LIFETIMELINES Black Oxide Coated Steel Tube Nut. Each bag contains 10 meticulously crafted 3/16, 3/8-24 Inverted tube nuts, ensuring you have an ample supply for your automotive needs. Our tube nuts are a testament to unmatched superior quality. Crafted with precision and attention to detail, these nuts are designed to meet and exceed industry standards, guaranteeing their durability and reliability. The Black Oxide coating on these tube nuts goes beyond aesthetics; it provides exceptional corrosion resistance, ensuring that your brake lines remain protected and reliable even in harsh environments. Additionally, the coating minimizes buildup, further enhancing the longevity of your brake system. These tube nuts are versatile, compatible with a wide range of materials including steel, copper-nickel, copper-coated steel, PVF-coated, and stainless steel lines. Their adaptability makes them a practical choice for various automotive applications. We stand behind the quality of our products, which is why we offer a lifetime warranty on all items purchased from 4Lifetime. With our Black Oxide Coated Steel Tube Nut, you're not only getting a premium product but also the peace of mind that it's backed by our commitment to excellence. Upgrade your brake line projects with the reliability and durability of 4LIFETIMELINES products today.