E-Z Coil Thread Repair Kit for Metal - Economy - M20-2.0 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: (5x) 51415, (1x) M1021, (1x) 51470Applications:Soft metals: aluminum, cast iron, magnesium, etc.