The STEEL TUBE NUT INVERTED FLARE 3/8" is crafted from high-quality CA360 or CA345 brass, providing exceptional strength and corrosion resistance. Designed specifically for use with copper tubing, this nut facilitates secure and leak-proof connections in various automotive and industrial applications. Its 3/8" size ensures compatibility with standard fittings, making it an essential component for reliable fluid transfer systems. Trust in this robust solution to enhance your project s performance and longevity.