E-Z Coil Thread Repair Kit for Metal - Economy - M12-1.75 x 1DEverything 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: (5x) 41010, (1x) M1015, (1x) 41070Applications:Soft metals: aluminum, cast iron, magnesium, etc.