Pressure testing to 4500 psi ensures ultimate strength in the toughest stopping conditions. And, our Regal brake lines have passed rigorous DOT standards, which ensures safety and performance for the ultimate in stopping power. Other Regal brake line options include inner-line Teflon coating that resists expansion and degradation from brake fluid exposure, abrasion resistant line covers and rigorous T.U.V. approval. And, of course, they have long term warranties to protect your investment. Join thousands of satisfied customers who count on us for quality automotive products and customer service every time!