Moroso Blue Max 8mm Spiral Core Plug Wire Set for XL 27214 Moroso spiral core ignition wire specifications were conceived and designed by Moroso engineers using the latest technology and finest materials obtainable When manufacturers completed the extrusion process, Moroso ignition wire had achieved unsurpassed energy transmission, electro-magnetic interference suppression and dielectric strength The wire has been used successfully on every type of vehicle from common street vehicles to top fuel dragsters and NASCAR Nextel cup stock cars