E-Z Coil Thread Repair Kit for Metal - Economy - M18-2.5 x 2DEverything needed to repair or reinforce tapped holes in metal in a convenient, easy-to-order kit.FeaturesEconomy kits include threaded inserts, STI tap, and installation tool.Kit Contains: (1x) 41370, (1x) M1020, (5x) 41320ApplicationsSoft metals: aluminum, cast iron, magnesium, etc.