The Helicoil 5546-6 M6 x 1.0 Metric Coarse Thread Repair Kit is a set of Heli-Coil Inserts in a metric measurement system. Manufactured by Helicoil in the United States, this kit includes 11 inserts,a tap, and an installer designed for repairing threads. Ideal for automotive and hand tool applications, this product is part number 5546-6.