This kit includes a very robust and weatherproof 250-amp solenoid that can be used to power a variety of high current items on your custom vehicle's electrical system. Kit includes: 250-amp solenoid, Voltage spike cancelling resistor, Weatherproof ground lead, (2) 1/4-20 x 3/4"long bolts with lock washers and nuts for mounting the solenoid, #10 Heat shrinkable ring terminal, 5/16" Heat shrinkable ring terminal.