DescriptionMaterical:ABS +plastic PP + metal copperSize:17.5 cm x 6.5 cm (1 cm = 0.39 inch)Package:1 x Method of use:1、 will be the top of the rubber hose nozzle directly inserted in the tire valve、 heard the sound of air emission by tyres、 said air circulation、 the gas nozzle tight again can.2、 remove the plug、 directly plugged into the cigarette lighter.3、 auto starting motor、 open the air pump switch、 can begin inflatable、 optimal continuous aeration time within 15 minutes、 if there is need to charge、 the need for air compressor cooling.4、 inflatable、 the pointer instrument with tire actual pressure rise、 when the cursor reaches the proper tire pressure (before and after each car tires on standard identified in the driver's door frame or on the inside of oil)、 turn off the switch、 pull out the plug、 inflatable work is completed.