Our 3/16" stainless steel tubing is made from 304 grade (rated at 6000 psi) which is double annealed to allow easy flaring.
NOTE: This line is intended to be used in conjunction with 37 degree AN # 3 style fittings which make use of a single flare. Stainless steel line will not work with 45 degree double flare 3/8"-24 flare nuts. We strongly suggest that the 37 degree single flare (flaring tool # 910-89524) be used when flaring this line for the AN # 3 tube nuts and sleeves.
Brake System Builder Tip (GIF)