Proto Single 10 x 12mm Metric Flare Nut Wrench, Top Choice for Pros and Home Mechanics, Quality Toolbox Essential, Line Wrench for Brake Lines, Fuel Lines, and Fittings

Proto Single 10 x 12mm Metric Flare Nut Wrench
✔️ 1 flare nut wrench, 10 mm x 12 mm size, pro-grade build

This Proto single flare nut wrench grips line fittings on more sides than an open end wrench, so soft nuts don't round off. It's a handy pick for brake line, fuel line, and hydraulic fitting work.

✅ Pack size: 1 flare nut wrench
✅ Brand: Proto
✅ Size: 10 mm x 12 mm
✅ Measurement system: metric
✅ Mfr part number: J3710MT

💡 What is a flare nut wrench used for?
Flare nut wrenches are made for line fittings that round off easy.

• They grip the fitting on more sides than an open end wrench
• The slot lets the wrench slip over brake and fuel lines
• Perfect for soft brass and aluminum fittings