Brake Hoses Unlimited - MALE TUBE NUT - M9 x 1, Bubble Flare - 3/16" Line. - M9 x 1, Bubble Flare - 3/16" Line. MALE TUBE NUT. Then as the hoses moved it acted like sand paper and wore away the inner tube causing failure.
Male Tube Nut Inverted Flare Fitting 1PC Kit 3/16 Tube x 1/2"-20 Thread GREEN
MALE TUBE NUT - 9/16" x 18, Double Flare, 1/4" Line
MALE TUBE NUT - M12 x 1.5, Double Flare, 3/16" Line
10 an Tube Nut & Tube Sleeve Fits 5/8'' O.D.Tube grade 304 stainless steel 1pc
Vibrant 10752 AN Tube Nut -6AN for 3/8" Tube
Vibrant 10751 AN Tube Nut -4AN for 1/4" Tube