E-Z Coil Thread Repair Kit for Metal - Economy - 1-1/4-12 x 1.5DEverything 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) 31915, (1x) M1029, (1x) 31970Applications:Soft metals: aluminum, cast iron, magnesium, etc.