Stainless Steel Braided Brake Lines. HEL Brake line kits eliminate that'spongy' feeling often found with rubber hoses under extreme braking conditions the time when performance is needed the most. Hel performance vauxhall insignia stainless steel braided brake lines hose pipes don't risk using inferior brake lines when you can trust us to improve braking reliability and performance we use stainless steel in our lines and our fittings.