【MAX 150PSI】 A giant portable air compressor with 12-volt 150ppsi pressure, unlike the common 120 and 100 ppsi lamp. Plug it directly into your car's cigarette lighter socket. Turn on the engine and attach the screw-on tire casing to the tire valve stem before turning on the power. 【Huge Barrel】 The 22mm wide barrel provides a unique thrust, unlike the common 19mm wide barrel with a wide cylinder. 【Intelligent Auto-Shutoff System】 Automatically shuts off when the set tire pressure is reached quickly and accurately. Overheat protection automatically turns off in case of overload.