Flare Nut Wrench Set For Brake & Fuel Lines – 1 Pc, Sizes 5.5–46mm

Flare Nut Wrench — Precision Grip for Brake & Fuel Line Repairs Stripped flare nuts are a mechanic's nightmare — one wrong move on a brake line or fuel pipe can mean a costly repair or a dangerous leak. Whether you're a professional technician or a hands-on DIYer, you need a wrench that fits flush, grips firmly, and won't round off the nut.

This Flare Nut Spanner Wrench is engineered specifically for that job. Machined from alloy steel with a corrosion-resistant finish, each wrench features a six-point open-end profile that wraps around the flare nut for maximum contact.

Available in 22 individual sizes ranging from 5.5–7 mm up to 41–46 mm (approximately 0.22–1.81 in), so you can match the exact nut on your brake line, fuel pipe, or hydraulic fitting.

Use it when bleeding brakes on a daily driver, replacing fuel filters on a pickup truck, servicing hydraulic lines on an ATV, or tackling a full brake system overhaul on a restoration project. The slim-profile jaws reach into tight engine bays where standard open-end wrenches simply won't fit.

Compatible with brake lines, fuel pipes, hydraulic fittings, and flare nut connections on cars, trucks, motorcycles, and ATVs — sold individually by size.

Key Features 🔩 Six-Point Flare Nut Profile — Wraps around the full nut face to maximize torque transfer and eliminate rounding on soft brass or corroded steel flare nuts. 🛠️ Alloy Steel Construction — Hardened and tempered for lasting strength; resists deformation under high torque loads common in brake and fuel system work. 🔧 Corrosion-Resistant Finish — Surface treatment protects against brake fluid, fuel, and road grime, extending service life in harsh under-vehicle environments. 📐 22 Individual Size Options — Covers sizes from 5.5–7 mm to 41–46 mm (approx. 0.22–1.81 in), matching the most common flare nut dimensions across domestic and import vehicles. ✋ Ergonomic Handle Shape — Contoured grip reduces hand fatigue during extended use and provides confident control in confined spaces under the hood or chassis. 🚗 Slim-Profile Open End — Narrow jaw design accesses flare nuts in tight brake line clusters and fuel rail areas where bulkier wrenches cannot reach.

Who Is This For 🔧 DIY Home Mechanics Tackle brake line replacements, fuel filter swaps, and hydraulic fitting work at home without rounding off expensive fittings. The right size wrench makes the job clean and safe. 💼 Professional Technicians Keep individual sizes on hand for specific vehicle platforms.

Precision machining meets the standards expected in a professional shop environment. 🏍️ Motorcycle & ATV Enthusiasts Smaller sizes (5.5–14 mm) are ideal for the compact brake and fuel systems found on motorcycles, dirt bikes, and ATVs where access is extremely limited. 🚛 Restoration & Classic Car Builders Old brake and fuel lines often have corroded flare nuts that demand a proper-fitting wrench.

Avoid damage to irreplaceable fittings with a wrench designed for the task.

Technical Specifications Tool Type Flare Nut Spanner Wrench (Open-End) Material Alloy Steel, Hardened & Tempered Finish Corrosion-Resistant Coating Size Range 5.5–7 mm to 41–46 mm (approx. 0.22–1.81 in) Available Sizes 5.5–7, 6–7, 8–10, 9–11, 10–12, 11–13, 12–14, 13–15, 13–16, 14–17, 16–18, 17–19, 18–21, 19–22, 22–24, 24–27, 27–30, 30–32, 32–34, 34–36, 36–41, 41–46 mm Weight (by size) Typically 32 g – 1,236 g depending on size selected Quantity 1 Pc (sold individually — select size from variant options) Application Brake lines, fuel pipes, hydraulic fittings, flare nut connections Compatible Vehicles Cars, trucks, motorcycles, ATVs, and most vehicles with metric flare fittings Frequently Asked Questions ..