Helicoil 5521-6 3/8-16 Inch Coarse Thread Repair Kit The product is 3/8-16thread repair kit Easy and simple use kit The product is manufactured in china Includes 12 inserts, complete instructions, Heli-Coil tap and installation tool Used for repairing tapped holes Made from high quality material Comes in carded packing Easy to use Includes 12 inserts, complete instructions, Heli-Coil tap and installation tool Used for repairing tapped holes Made from high quality material Comes in carded packing Easy to use