$109.98MTEC Industries brake lines are made of the finest PTFE hose with a stainless steel wire braided cover and permanently crimped-on zinc plated steel fittings. They reduce volumetric expansion giving you the reliability and safety you demand. Stainless steel lines will give protection from issues along with enhancing the appearance of your installation. Overtime and under continuous use OEM rubber lines can swell and expand, exposing the driver to brake fade. The rubber cover is also vulnerable to attacks from the ozone layer rubber which causes it to deteriorate. Rubber hoses might be susceptible to flying debris in extreme applications such as auto crossing, hard driving, and racing.