There are many advantages to using stainless steel; one is reduced volumetric expansion. Over time and under continuous use, OEM rubber hoses can swell and expand. The rubber covers can also deteriorate and cause a failure. In extreme applications (autocrossing, racing, hard driving) rubber hoses can come into contact with debris, thus causing failure. Moss Motors Miata high performance stainless braided clutch line offers superior performance, longer life and better pedal feel since OEM rubber lines expand. Utilizing Teflon tubing with a stainless steel outer tube, this line is a must for any clutch system.