Daytona Twin Tec Spark Plug Wire Set This universal kit is 8.5mm and 24 in length with black silicone covering. It includes 90 and 115 plug boots and coil boots and terminals. Features: The universal comes with 8.5mm outer sleeve and spiral core 24 Long 90 and 115 plug boots and assorted coil boots and terminals Kit includes plug wires, terminals and boots for many applications Made in USA