E-Z Coil Thread Repair Kit for Metal - Economy - M18-1.5 x .500Everything 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) 51334, (1x) M1020, (1x) 51375Applications:Soft metals: aluminum, cast iron, magnesium, etc.