NEW IN BOX!!! SAVE MONEY BY FROM ME!!! Coil Specs:Turns ratio: 100:1 Primary resistance: .7 OHMs. Secondary resistance: 4.5K OHMs. Inductance: 8 mH. Maximum voltage: 45,000 Volts (Tested with 6AL Ignition) Peak current: 140 mA Spark duration: 350 uSFeatures: Improved output coil for electronic, Point, Blaster or MSD 5, 6, and 7 Series Ignitions (ballast resistor required for points) Alkyd tower with high dielectric properties is less prone to carbon tracking 100:1 turns ratio and lower primary resistance produce high voltage output Metal canister is filled with a premium grade oil for cooling.