This kit includes capacitors, shielded wire, ferrite rings, and heat shrink.  The kit is used to connect your electric motor to a speed controller and minimize the electric noise.  Electric noise will reek havoc on your RF equipment and microcontrollers.  We have done a lot of testing, and this kit will work best with our 24VDC gear motors.  It will work well all other motors too.  See our Motor controller page for support on hooking up a motor.   Follow this link for more information on how to hook up the motors.