This is for a box of 6 Champion Double Platinum Spark Plug comes in a box and has the plug type RC10PYPB4 with a 14MM thread diameter and 0.75 IN reach. It has a platinum firing tip for superior performance and a non-removable nut for easy installation. The plug has a hex size of 15.9 MM and a ground electrode core material of platinum pad surface. It has a manufacturer heat range of 10 and a classification of Champion Double Platinum. It is the perfect fit for your ignition system and will enhance your vehicle's performance. Get yours now and experience the difference in your car's power and efficiency.