Review on 🔧 MuHize 25 ft 3/16'' Double Walled Brake Line Tubing Kit - Zinc-Coated Steel Tube Roll for Fuel, Transmission (Includes 16 Fittings) in Hydraulic Fuel Transmission System by Jeff Davidson

This is not copper as the name of the product suggests, spent an hour trying to figure out why my coil wasn't working, decided to grind the contact pads and what I thought the copper oxide on the surface turned out to be real material everywhere, the copper paint layer is just sublimated. Then I tested it with a magnet and it's magnetic so it just got hot and didn't work properly.