{"product_id":"4lifetimelines-brake-line-fitting-size-gauge-compact-thread-checker-with-male-female-testers-stamped-sizes-wire-loop","title":"4LIFETIMELINES Brake Line Fitting Size Gauge — Compact thread checker with male\/female testers, stamped sizes, wire loop","description":"\u003cb\u003e4LIFETIMELINES Brake Line Fitting Size Gauge is a compact, multi-thread checker that identifies common brake line thread sizes quickly and stores conveniently on a coated wire loop.\u003c\/b\u003e\n\n\u003cp\u003eWhen you need to match or identify brake line fittings without measuring each thread individually, this gauge speeds up the process. Built to check the most common threads used in automotive braking systems, it combines male and female checkers for each size, with clear permanent stamping for fast, reliable identification. The plastic-coated wire loop keeps all the gauges together for easy access whether they hang on a pegboard, live in a toolbox, or ride along in a mobile service kit.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the gauge help identify brake line fittings?\u003c\/h3\u003e\n\u003cp\u003eThe gauge provides both male and female checkers for every listed size so you can physically test threads instead of relying on visual estimates. Each checker is stamped with its size to eliminate guesswork and speed up the repair or assembly process.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDirect fit testing for common brake thread standards\u003c\/li\u003e\n  \u003cli\u003eMale and female ends to verify internal and external threads\u003c\/li\u003e\n  \u003cli\u003ePermanently stamped sizes for instant recognition\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich thread sizes are included and why do they matter?\u003c\/h3\u003e\n\u003cp\u003eThis gauge covers the typical thread pitches and diameters found in many automotive brake systems, including both NPTF and unified thread sizes. Having these sizes on hand reduces the time spent searching for the correct fitting or ordering the wrong replacement part.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e1\/8\" NPTF and 1\/4\" NPTF for tapered pipe fittings\u003c\/li\u003e\n  \u003cli\u003e3\/8\" x 24, 7\/16\" x 20, 7\/16\" x 24 for common bleed and adaptor fittings\u003c\/li\u003e\n  \u003cli\u003e1\/2\" x 20, 9\/16\" x 18, 9\/16\" x 20, 5\/8\" x 16 for larger line connections\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow is the gauge built for shop and garage use?\u003c\/h3\u003e\n\u003cp\u003eThe checkers are assembled onto a plastic-coated wire loop that resists corrosion and makes hanging or carrying straightforward. Durable stamping and solid construction keep the markings legible through typical workshop wear.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePlastic-coated wire loop for storage and portability\u003c\/li\u003e\n  \u003cli\u003eDurable metal checkers resistant to routine shop handling\u003c\/li\u003e\n  \u003cli\u003eCompact layout keeps all sizes together and easy to find\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow can I use the gauge day-to-day during repairs?\u003c\/h3\u003e\n\u003cp\u003eSlip the unknown fitting onto the appropriate male or female checker to verify thread pitch and diameter, then match to replacement parts or adapters. The gauge works well for diagnosing mismatched fittings, prepping a brake line swap, or confirming thread type before ordering parts.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eQuick verification of external and internal brake line threads\u003c\/li\u003e\n  \u003cli\u003ePrevents ordering incorrect fittings or adapters\u003c\/li\u003e\n  \u003cli\u003eUseful for mobile technicians, DIYers, and shop mechanics\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The 4LIFETIMELINES Brake Line Fitting Size Gauge is designed for professional mechanics, mobile technicians, and experienced DIYers who regularly work on automotive braking systems. If you need a small, reliable tool to quickly identify common brake line threads and avoid costly mistakes when replacing fittings or adapters, this gauge is a practical addition to your toolset.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can this gauge check both male and female brake fittings?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. Each listed size includes a male and female checker so you can verify both internal and external threads.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Which thread sizes does the gauge include?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It checks 1\/8\" NPTF, 1\/4\" NPTF, 3\/8\" x 24, 7\/16\" x 20, 7\/16\" x 24, 1\/2\" x 20, 9\/16\" x 18, 9\/16\" x 20 and 5\/8\" x 16.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"4LIFETIMELINES","offers":[{"title":"Default Title","offer_id":48084563919006,"sku":"B08DKWJZB5","price":30.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/4lifetimelines-front-view-gauge.jpg?v=1785859592","url":"https:\/\/northtrailauto.ca\/products\/4lifetimelines-brake-line-fitting-size-gauge-compact-thread-checker-with-male-female-testers-stamped-sizes-wire-loop","provider":"North Trail Auto","version":"1.0","type":"link"}