4LIFETIMELINES Brass Brake Line Union, 3/16 (M10x1.0 Inverted), 10/bag
- Correct fit for common brake repairs – 3/16 in (4.75 mm) line size with M10×1.0 inverted-flare threads, the spec used on many import and domestic vehicles.
- Durable, corrosion-resistant brass – resists rust from winter road salt for long service life vs. plain steel unions.
- Hydraulic-brake ready – purpose-built union for joining hard brake lines in maintenance and repair.
- Multi-material compatible – works with steel, copper-nickel, copper-coated steel, PVF-coated, and stainless replacement lines.
- Backed for life – supported by 4LifetimeLines’ lifetime warranty for peace of mind in the bay or garage.
High quality brass for leak-proof reliability