Kaleep Portable Air Compressor, 12V 100PSI Double Power Pump with Car Cigarette Lighter, Tire Inflator with Alligator Clamps Direct to Battery for Small ATV/Truck/SUV/Sedan Tires Silicon slice thickness of 40 mm, speed fast, pump up faster, more easily Copper heat resistance at 130 , in the process of high-speed operation, will produce a lot of heat, the heat resistant high temperature, pep talk fast, more secure The commutator diameter is 22.5 MM size is larger powerful Carbon brush plate is epoxy board combined with copper stent, longer service life Using aluminum metal stents, pump work more stable, transportation is not easy to damage