BUILT TO LAST: Easily connecting to your 12V DC battery (not incl.). 1 x Smoke Machine. 1 x Smoke Hose. WIDE COMPATIBILITY: This automotive maintenance kit includes 4 adapters to fit most intake hoses and connect the 4 feet smoke hose tightly to the auto part you want to test for leakage, whether on your car, motorcycle, ATV, speedboat, light truck, or other vehicle.