Heli Coil inch coarse thread repair kit includes inserts, detailed instructions, Heli-Coil tap and installation tool. It is made from high quality material and is extremely long lasting. This inch coarse thread repair kit is used for repairing tapped holes which have been stripped or damaged, due to wear, corrosion and over torque. What's Included: 6 inserts, installation tool & tap7/16-14 x .656 inch29/64 inch drill sizeMade from high quality material