The Time-Sert 8313 M12 x 1.5 Chrysler Head Bolt Thread Repair Kit is a high-quality product designed for spark plug thread repair in automobiles. Made in the United States by the reputable brand Time-Sert, this kit comes with one unit and is backed by an unspecified length warranty. Perfect for repairing damaged spark plug threads, this kit is essential for maintaining the performance of your vehicle. With free shipping included, this product offers convenience and peace of mind for auto enthusiasts and mechanics alike.