Mallory 9-28010 Plug Wire Set Ultra low resistance spiral core delivers high energy output for maximum spark at the plug Excellent RFI/EMI suppression for even the most sensitive high tech on-board electronics 8 millimeter ozone resistant blue silicone jacket repels water, oil, grease, fuel and withstands temperatures up to 500 degrees 100 percent Kevlar inner core for superior strength which virtually eliminates breakage Layered inner carbon conductive element for excellent RFI/EMI suppression