AutoLoc Smoke Screen Kit add a little more spice to your burn outs. Just think, at a push of a button you can have a huge billow of smoke emerge from your exhaust pipe. Ideal for car shows and special effects. The smoke screen kit includes high pressure 1/8 inch copper tubing, compression fittings, one can of AutoLoc smoke screen, base plate, an 1/8 inch 12 volt heavy duty valve and detailed instructions for easy installation. This kit is for off road use only, and is not intended for use while the vehicle is in motion.