M6 x 1 x 9mm Metric Coarse Thread Repair Kit, 5546-6 HeliCoil

HeliCoil inserts quickly and permanently restores stripped, worn or damaged tapped holes to their original size and condition. Inserts work in any part of material - aluminum, magnesium, cast iron, bronze, etc. Includes: 12 stainless steel inserts, 1 tap, 1 installation tool. Drill Size: 1/4"