10 of the most commonly used metric inverted flare nut, 10 mm nuts with a thread pitch of 1 mm.
Set of 16 Inverted Flare Tube Nuts 2x 7/16”-24 2x 9/16”-18 Threads Nuts Fit for 3/16 inch Tube Brake Line Systems Accessories - AliExpress
Brake Line Fittings, Armor, Unions, Tees, Inverted Flare Fittings – TheStopShopParts
4LIFETIMELINES Stainless Steel Brake Line Union, 3/16 (M10x1.0 Inverted), Bag of 10 : Automotive
Stainless Brake Line Fitting Kit, SAE, Metric, Inverted and Bubble/ISO – TheStopShopParts
American Grease Stick Co. Steel Tube Nut, 3/16 (M10 x 1.0) Bubble BLF-39C-5 - Advance Auto Parts
The Stop Shop 25 ft. Zinc Plated 3/16 Brake Line Tubing w/metric brake Line invert flare fittings. 10 x 1 mm (Pack of 10 fittings) : Automotive
Metric Brake Line Adapter 3/16 (3/8 -24) 3/16 12 MM x 1.0 - Each
Steel Tube Nut, 3/16 (M11x1.5 Bubble) – AGS Company Automotive Solutions
The Stop Shop 25 ft. Copper Nickel 3/16 Brake Line Uganda
The Stop Shop Inverted Flare Steel Brake Line Fittings For 3/16 Inch O.D. Tubing With 3/8-24 Threads (Pack of 150) : Automotive