Metric Brake Line Fitting Size Gauge

Metric Brake Line Fitting Size Gauge Eliminate trial-and-error when plumbing metric brake and fuel lines with the 4LifetimeLines® Metric Brake Line Fitting Size Gauge. This pocket-sized anodized-aluminum tool instantly verifies the most common metric thread pitches—M10×1.0, M10×1.25, M12×1.0 and M12×1.5—so you always grab the correct nut, union or adapter on the first try. Why You Need a Metric Fitting Gauge Mixing up fittings leads to cross-threading, fluid leaks and wasted tubing. Instead of carrying multiple adapters or measuring with calipers, simply insert the flare end or nut into the matching slot. A precise “snap” fit confirms the size and pitch, ensuring perfect thread engagement every time. Whether you’re a professional technician or a weekend DIYer working on European and Asian vehicles, this gauge brings speed and confidence to every brake-line job. Key Features Four Precision-Milled Slots check M10×1.0, M10×1.25, M12×1.0 and M12×1.5 thread pitches Anodized-Alumin