FMSI > Brake System > Brake Lines > Spring Armored Silver Zinc Brake, Fuel & Transmission Lines > View Items FMSIFMSI Brake SystemBrake System Brake LinesBrake Lines Spring Armored Silver Zinc Brake, Fuel & Transmission LinesSpring Armored Silver Zinc Brake, Fuel & Transmission Lines View Items Spring Armored Silver Zinc Brake, Fuel & Transmission Lines Email This Page Download PDF Download PDF Printable Page Spring Armored Silver Zinc Brake, Fuel & Transmission Lines Brake Lines Close Window Double wall (.028) Zinc plated brake lines. 16,000psi burst pressure, with double annealed seams, with spring armor to protect against road debris.