Includes one 18" wire with 90° plug and 180° (straight) coil boot. The other wire is 9" with 90° plug boot and a 90° coil boot. Compatible with all H-D ignition systems; both points and electronic. The 9mm Fire Power wires come with the core of the ThunderVolts; according to Taylor these are the best wires money can buy. The 25 ohm/ft. ferrite spiral core is made with a blend of copper nickel alloy which is bonded by a conductive acrylic cover. Taylor claims more horsepower; more torque and better mileage. With the silver metallic plug boots styled after a 9mm pistol it gives a very distinctive look. Note: Some electronic ignition manufacturers do not recommend using spiral wound core cables. Check the instruction manual of your electronic ignition module for more information. When in doubt it is advised to use suppression core cables for electronic ignition set-ups.