E-Z Coil Thread Repair Kit for Metal - Economy - M3.5-0.6 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: (10x) 40310, (1x) M1005, (1x) 40370Applications:Soft metals: aluminum, cast iron, magnesium, etc.